Muscles of Chest Wall

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Questions and Answers

Match the following muscles with their primary action:

Diaphragm = Aids in inhalation External intercostal mm. = Helps stabilize the rib cage

Match the following muscles with their origin:

Diaphragm = Lumbar vertebrae External intercostal mm. = Upper borders of ribs

Match the following muscles with their innervation:

Diaphragm = Lower thoracic nerves External intercostal mm. = Vagus nerve

Match the following muscles with their blood supply:

Diaphragm = Superior phrenic artery External intercostal mm. = Internal thoracic artery Signup and view all the answers

Match the following muscles with their group:

Diaphragm = Core muscles External intercostal mm. = Respiratory muscles Signup and view all the answers

Match the following muscles with their insertion:

Diaphragm = Lower ribs External intercostal mm. = Lower thoracic spine Signup and view all the answers

Match the following muscles with their attachment:

Diaphragm = L1 vertebra External intercostal mm. = Upper borders of ribs Signup and view all the answers

Match the following muscles with their main functions:

Diaphragm = Creates pressure changes in thoracic cavity External intercostal mm. = Promotes expiration Signup and view all the answers

Match the following terms related to the thoracic wall with their descriptions:

ribs = Curved bones forming the ribcage intercostal muscles = Muscles located between the ribs intercostal nerves = Nerves supplying the intercostal spaces thoracic wall = Structure enclosing the thoracic cavity Signup and view all the answers

Match the following arteries with their primary function:

supreme arteries = Supply blood to the first rib region internal thoracic artery = Supply blood to the anterior thoracic wall musculophrenic artery = Supply blood to the diaphragm and lower ribs posterior intercostal artery = Supply blood to the intercostal spaces Signup and view all the answers

Match the following respiratory processes with their actions:

inspiration = Elevate ribs and expand thoracic cavity expiration = Decrease volume of thoracic cavity elevation of ribs = Increases lung capacity during inhalation expiration phase = Involves passive relaxation of the thoracic wall Signup and view all the answers

Match the following areas of the ribcage with their anatomical positions:

lower borders of ribs = Form the base of the ribcage upper borders of ribs = Connect with the costal cartilages subjacent ribs = Ribs located immediately below another rib intercostal spaces = Spaces between adjacent ribs Signup and view all the answers

Match the following types of muscles with their categorization:

innermost intercostal mm. = Muscles closest to the innermost rib layer external intercostal mm. = Muscles that assist in inspiration internal intercostal mm. = Muscles primarily assisting in expiration accessory muscles of respiration = Muscles that aid during deep breathing Signup and view all the answers

Match the following terms with their related anatomical structures:

intercostal spaces = Regions housing muscles and nerves intercostal arteries = Supply blood to the muscles between ribs thoracic artery = Major blood vessel supplying the thorax intercostal veins = Venous return from intercostal regions Signup and view all the answers

Match the following respiratory muscles with their functions:

diaphragm = Primary muscle of respiration external intercostals = Assist in inhalation and rib elevation internal intercostals = Facilitate forced expiration pectoralis major = Accessory muscle for deep inspiration Signup and view all the answers

Match the following nerve functions with their roles in respiration:

intercostal nerves = Innervate the intercostal muscles phrenic nerve = Innervates the diaphragm vagus nerve = Regulates autonomic functions during respiration sympathetic nerves = Involve in dilation of airways Signup and view all the answers

Match the following characteristics with the types of respiratory movements:

elevation = Increases volume in thoracic cavity during inspiration depression = Lowers ribcage during forced expiration expansion = Increase in lung volume during inhalation compression = Decrease in lung volume during exhalation Signup and view all the answers

Match the following structures that prevent movement with their functions:

costal cartilage = Connects ribs to the sternum intercostal membranes = Flexible tissue between the ribs ligaments = Stabilize the ribcage muscles = Provide support during respiratory movements Signup and view all the answers

Match the following parts of the Pectoralis Major with their locations:

Clavicular part = Lateral lip of intertubercular sulcus of humerus Sternal part = Anterior surface of sternum and cartilages of true ribs Abdominal part = Aponeurosis of external abdominal oblique muscle Pectoral region = Clavicular part: Sternal half of clavicle Signup and view all the answers

Match the following functions of the Pectoralis Major with their descriptions:

Flexes = Brings the arm forward Adducts = Moves the arm towards the body Medially rotates = Rotates the arm inward towards the body Extends = Brings the arm backward Signup and view all the answers

Match the following anatomical terms with their corresponding structures:

Pectoral branch of thoracoacromial artery = Supplies blood to the pectoral region Medial and lateral pectoral nerves = Innervate the pectoral muscles Clavicular part = Origin from the clavicle Sternal part = Origin from the sternum and true ribs Signup and view all the answers

Match the following descriptions of Pectoralis Minor with their characteristics:

Anterior surface of sternum = Location of sternal part of Pectoralis Major Aponeurosis of external abdominal oblique muscle = Location of abdominal part of Pectoralis Major Medial lip of intertubercular sulcus = Attachment of Pectoralis Major Lateral lip of intertubercular sulcus = Anchors the arm in the shoulder joint Signup and view all the answers

Match the following arteries with their relevant muscle regions:

Thoracoacromial artery = Supplies the pectoralis major Internal thoracic artery = Supplies blood to the anterior chest wall Pectoral branch = Specific branch for pectoral muscle supply Musculophrenic artery = Supplies diaphragm and lower chest wall Signup and view all the answers

Match the following anatomical structures with their functions:

Levatores costarum = Elevate ribs Transverse processes of C7‒T11 vertebrae = Provide attachment for muscles Pectoralis major m. = Upper limb movement Posterior intercostal arteries = Supply blood to intercostal spaces Signup and view all the answers

Match the following components with their anatomical regions:

Thoracic wall = Support structure for thoracic cavity Subjacent ribs = Lower borders of costal cartilages Internal thoracic artery = Running parallel to the sternum Musculophrenic artery = Branches off internal thoracic artery Signup and view all the answers

Match the following muscles with their roles in respiration:

Intercostal muscles = Aid in inspiration and expiration Pectoralis major m. = Assist with forced expiration Levatores costarum = Elevate ribs during inspiration Transverse processes = Anchoring points for respiratory muscles Signup and view all the answers

Match the following arteries with their functions:

Internal thoracic artery = Supplies blood to the chest wall Musculophrenic artery = Supplies blood to diaphragm Posterior intercostal arteries = Supply intercostal spaces Supreme intercostal artery = Supplies uppermost intercostal spaces Signup and view all the answers

Match the following terms with their definitions:

Inspiration = Breathing in Forced expiration = Active process to expel air Subjacent = Located below or underneath Costal cartilages = Connects ribs to the sternum Signup and view all the answers

Match the following spinal nerves with their anatomical significance:

Posterior rami of thoracic spinal nerves = Innervate deep back muscles Intercostal nerves = Innervate muscles of thoracic wall C7‒T11 spinal nerves = Contribute to upper body movement Thoracic spinal nerves = Control upper limb and trunk sensations Signup and view all the answers

Match the following muscles with the movements they facilitate:

Levatores costarum = Elevation of ribs Pectoralis major m. = Adduction of arm Intercostal muscles = Change volume of thoracic cavity Transverse processes = Rotation of trunk Signup and view all the answers

Match the following chest wall attachements with their specifics:

Superior border of ribs = Attaches to costal cartilages Costal cartilages = Connects ribs to sternum Intercostal spaces = Spaces between adjacent ribs Muscles of thoracic wall = Assist in respiration Signup and view all the answers

Match the following blood vessels with their locations:

Internal thoracic artery = On the inner side of the rib cage Musculophrenic artery = Inferior to the diaphragm Posterior intercostal arteries = Lateral aspect of the thorax Supreme intercostal artery = Near the first two intercostal spaces Signup and view all the answers

Match the following respiratory phases with their characteristics:

Inspiration = Diaphragm contracts and moves down Expiration = Diaphragm relaxes and moves up Forced expiration = Involves additional muscle contraction Normal expiration = Passive process of air leaving lungs Signup and view all the answers

Match the following structures with their descriptions:

Ribs = Curved bones forming the rib cage Thoracic wall = Structure enclosing the chest cavity Intercostal nerves = Nerves located between the ribs Costal grooves = Depressions on the inner surface of ribs Signup and view all the answers

Match the following arteries with their specific roles:

Supreme intercostal artery = Supplies blood to the upper intercostal spaces Musculophrenic artery = Supplies blood to the diaphragm and lower ribs Internal thoracic artery = Supplies blood to the anterior thoracic wall Posterior intercostal artery = Supplies blood to the lower intercostal spaces Signup and view all the answers

Match the muscle movements with their corresponding terms:

Internal intercostal mm. = Muscles involved in forced expiration Drawing in of lower ribs = Action during forced expiration Inspiration = Action of inhaling air Expiration = Action of exhaling air Signup and view all the answers

Match the following terms with their functions:

Intercostal space = Area between adjacent ribs Costal groove = Facilitates vessels and nerves passage Subjacent ribs = Ribs located beneath other ribs Arteries = Blood vessels supplying oxygen to tissues Signup and view all the answers

Match the following anatomical features with their characteristics:

Upper borders of ribs = Edge aligned with costal cartilage Intercostal spaces = Sites for muscle attachment Costal grooves = Tracks for blood vessels and nerves Intercostal nerves = Key for sensory and motor innervation Signup and view all the answers

Match the following functions with their respective activities:

Prevent pushing out = Maintaining rib stability during expiration Inspiration = Expansion of thoracic cavity for air intake Expiration = Reduction of thoracic cavity for air expulsion Lower ribs in forced expiration = Movement to assist in air exhalation Signup and view all the answers

Match the following components to their roles in breathing:

Intercostal muscles = Facilitate rib movement during breathing Thoracic wall structure = Supports breathing mechanics Diaphragm = Main muscle of inspiration Rib cage = Protects thoracic organs while aiding respiration Signup and view all the answers

Match the following aspects of the thoracic anatomy:

Musculophrenic artery = Branches off the internal thoracic artery Intercostal spaces = House intercostal muscles and nerves Subjacent ribs = Ribs lying below the main rib structure Supreme intercostal artery = Supplies blood to the first two intercostal spaces Signup and view all the answers

Match these terms with their respective descriptions related to respiration:

Internal intercostal muscles = Aid in expiration by depressing ribs Intercostal spaces = Spaces between each rib for muscle and nerve Rib functions = Protection and structural support Costal grooves = Contain pathways for vascular and nervous systems Signup and view all the answers

Match the components related to blood supply in the thoracic area:

Intercostal arteries = Supply blood to intercostal muscles Internal thoracic artery = Major vessel for anterior thoracic supply Posterior intercostal arteries = Supply blood to the back intercostal musculature Musculophrenic artery = Supplies arterial blood to the diaphragm Signup and view all the answers

Match the following muscles with their respective blood supply:

Diaphragm = Pericardiacophrenic artery External intercostal mm. = Posterior intercostal artery Internal intercostal mm. = Anterior intercostal artery Rectus abdominis = Superior epigastric artery Signup and view all the answers

Match the following muscles with their origin:

Diaphragm = Xiphoid process External intercostal mm. = Lower borders of ribs Internal intercostal mm. = Upper borders of ribs Transversus thoracis = Costal cartilages Signup and view all the answers

Match the following muscles with their main actions:

Diaphragm = Draws central tendon down during inspiration External intercostal mm. = Elevates ribs during inhalation Internal intercostal mm. = Depresses ribs during exhalation Scalenes = Elevates first two ribs Signup and view all the answers

Match the following muscles with their innervation:

Diaphragm = Phrenic nerve External intercostal mm. = Intercostal nerves Internal intercostal mm. = Intercostal nerves Pectoralis major = Lateral and medial pectoral nerves Signup and view all the answers

Match the following muscles with their insertion:

Diaphragm = Central tendon External intercostal mm. = Upper borders of ribs Internal intercostal mm. = Lower borders of ribs Serratus anterior = Medial border of scapula Signup and view all the answers

Match the following muscles with their anatomical group:

Diaphragm = Respiratory muscles External intercostal mm. = Thoracic wall muscles Internal intercostal mm. = Thoracic wall muscles Rectus abdominis = Abdominal muscles Signup and view all the answers

Match the following muscles with their origin points:

Diaphragm = Costal cartilages 7-12 External intercostal mm. = Lower borders of ribs Internal intercostal mm. = Upper borders of ribs Quadratus lumborum = Iliac crest and lumbar vertebrae Signup and view all the answers

Match the following muscles with their blood supply sources:

Diaphragm = Superior and inferior phrenic arteries External intercostal mm. = Intercostal arteries Internal intercostal mm. = Intercostal arteries Pectoralis minor = Thoracoacromial artery Signup and view all the answers

Match the parts of the Pectoralis Major with their respective origins:

Clavicular part = Lateral lip of intertubercular sulcus of humerus Sternal part = Anterior surface of sternum, cartilages of true ribs Abdominal part = Aponeurosis of external abdominal oblique muscle Pectoral region = Clavicular part of pectoral nerves Signup and view all the answers

Match the segments of the Pectoralis Major with their blood supply:

Clavicular part = Pectoral branch of thoracoacromial artery Sternal part = Internal thoracic artery Abdominal part = Lateral thoracic artery Medial and lateral pectoral nerves = Subclavian artery Signup and view all the answers

Match the parts of the Pectoralis Major with their primary functions:

Clavicular part = Flexes the arm Sternal part = Adducts the arm Abdominal part = Medially rotates the arm All parts = Stabilizes shoulder girdle Signup and view all the answers

Match the origins of the Pectoralis Minor muscle with their respective anatomical locations:

Coracoid process = Subscapularis muscle Anterior surface of the third to fifth ribs = Intercostal muscles Sternal part = Clavicle Medial border of the scapula = Supraspinatus muscle Signup and view all the answers

Match the pectoral arteries with their corresponding regions:

Thoracoacromial artery = Supplies pectoralis major Internal thoracic artery = Supplies sternum region Lateral thoracic artery = Supplies lateral thorax Pectoral branch = Supplies medial pectoral muscles Signup and view all the answers

Match the following intercostal components with their respective characteristics:

Intercostal nerves = Innervate the muscles and skin of the thoracic wall Innermost intercostal mm. = Assist in expiration by depressing the ribs Posterior intercostal arteries = Supply blood to the posterior thorax Spaces in ribs = Facilitate intercostal muscle action during respiration Signup and view all the answers

Match the following arteries with their functions:

Supreme intercostal artery = Supplies the first two intercostal spaces Musculophrenic artery = Supplies the lower intercostal spaces Internal thoracic artery = Provides anterior intercostal branches Thoracic aorta = Supplies the posterior intercostal arteries Signup and view all the answers

Match the following ribs with their positions:

Lower borders of ribs = Form the costal margin that supports the diaphragm Upper borders of ribs = Articulate with the vertebrae Subjacent ribs = Located directly below a given rib Ribs = Contribute to the thoracic cage structure Signup and view all the answers

Match the following respiratory actions with their purposes:

Inspiration = Elevation of the ribs Expiration = Depression of the ribs Muscle contraction = Facilitates breathing mechanics Relaxation = Reduces thoracic volume for exhalation Signup and view all the answers

Match the following terms with their related actions:

Elevation of ribs = Increases thoracic cavity volume Expiration = Reduces pressure in thoracic cavity Muscular contraction = Lowers intrathoracic pressure Intercostal muscles = Assist in rib movement during breathing Signup and view all the answers

Match the following descriptions with anatomical features:

Intercostal spaces = Houses intercostal muscles and vessels Thoracic wall = Forms the protective cage for thoracic organs Ribs = Curved bones that form the rib cage Intercostal arteries = Provide blood supply to the intercostal spaces Signup and view all the answers

Match the following components with their functions in respiration:

Thoracic wall = Protects thoracic organs and aids in breathing Intercostal mm. = Facilitate rib movement during breath cycles Arteries = Deliver oxygenated blood to thoracic regions Nerves = Control muscular actions during respiration Signup and view all the answers

Match the following muscle groupings with their actions:

Innermost intercostals = Assist in the expiration phase External intercostals = Aid in the inspiration phase Internal intercostals = Contribute to forced expiration Accessory muscles = Support deep breathing efforts Signup and view all the answers

Match the following terms with their implications in respiration:

Elevate ribs = Expand thoracic cavity during inhalation Depress ribs = Facilitate airflow out during exhalation Increase intrathoracic pressure = Promote expiration Thin intercostal muscles = Enhance rib mobility during breathing Signup and view all the answers

Match the following anatomical structures with their corresponding functions:

Intercostal nerves = Prevent pushing out of ribs Costal grooves = House the intercostal arteries Internal intercostal mm. = Assist in expiration Thoracic wall = Protects thoracic organs Signup and view all the answers

Match the following arteries with their respective locations:

Musculophrenic artery = Branches off the internal thoracic artery Supreme intercostal artery = Supplies upper intercostal spaces Posterior intercostal artery = Supplies lower ribs Internal thoracic artery = Runs along the inner aspect of the ribcage Signup and view all the answers

Match the following processes with their associated actions:

Inspiration = Drawing in of ribs Expiration = Lower ribs in forced expiration Intercostal spaces = Accommodate the intercostal muscles Ribs = Articulate with the thoracic vertebrae Signup and view all the answers

Match the following rib-related terms with their descriptions:

Subjacent ribs = Ribs situated below others Upper borders of ribs = Sites for muscle attachment Intercostal spaces = The gaps between adjacent ribs Costal grooves = Fissures for vessels and nerves Signup and view all the answers

Match the following intercostal muscle functions with their correct roles:

Internal intercostal mm. = Assist in forced expiration External intercostal mm. = Facilitate inhalation Innermost intercostal mm. = Stabilize the ribs Transversus thoracis = Depress the ribs during expiration Signup and view all the answers

Match the following terms related to the thoracic cavity with their functions:

Intercostal arteries = Supply blood to intercostal spaces Thoracic wall = Supports and protects inner organs Intercostal nerves = Convey sensory and motor functions Costal grooves = Provide passageway for blood vessels Signup and view all the answers

Match the following terms with their anatomical relevance:

Ribs = Form the lateral boundaries of the thoracic cavity Intercostal muscles = Located between the ribs Internal thoracic artery = Supplies the anterior thoracic wall Musculophrenic artery = Supplies the diaphragm and lower intercostal spaces Signup and view all the answers

Match the following functions of the ribcage with their implications:

Expansion during inspiration = Increases thoracic volume Decompression during expiration = Reduces thoracic volume Stabilization of thoracic organs = Maintains organ position Facilitation of respiratory movements = Aids in breathing efficiency Signup and view all the answers

Match the following muscles with their primary roles in respiration:

Levatores costarum = Elevate ribs during inspiration Pectoralis major = Assists in forced expiration Transverse thoracis = Depresses ribs during expiration Internal intercostal = Draws ribs together during expiration Signup and view all the answers

Match the following intercostal structures with their descriptions:

Posterior intercostal = Supply blood to the posterior thoracic wall Anteroinferior intercostal = Supply blood to the anterior thoracic wall Internal intercostal mm. = Work during forced expiration External intercostal mm. = Assist in normal breathing Signup and view all the answers

Match the following arteries with their corresponding areas:

Internal thoracic artery = Supplies anterior thoracic wall Musculophrenic artery = Supplies diaphragm and lower ribs Posterior intercostal artery = Supplies intercostal spaces Supreme intercostal artery = Supplies upper intercostal spaces Signup and view all the answers

Match the following terms to their functions in respiration:

Inspiration = Movement of air into the lungs Expiration = Movement of air out of the lungs Forced expiration = Active process involving abdominal muscles Relaxation = Passive process during quiet breathing Signup and view all the answers

Match the following anatomical structures with their respective descriptions:

Costal cartilages = Connects ribs to sternum Subjacent ribs = Ribs located below another rib Intercostal spaces = Spaces between adjacent ribs Thoracic wall = Structural support for the thorax Signup and view all the answers

Match the following rib movements with their associated muscles:

Elevation of ribs = Levatores costarum Depression of ribs = Internal intercostals Stabilization of ribs = Transverse thoracis Expansion of thoracic cavity = Pectoralis major Signup and view all the answers

Match the following muscles with their innervation:

Pectoralis major = Medial and lateral pectoral nerves Levatores costarum = Thoracic spinal nerves Internal intercostals = Intercostal nerves Transverse thoracis = Intercostal nerves Signup and view all the answers

Match the following processes with their respiratory phases:

Quiet breathing = Passive inspiration and expiration Forced inspiration = Active contraction of diaphragm and intercostals Forced expiration = Active contraction of abdominal and internal intercostals Coughing = Forceful expiration to clear airways Signup and view all the answers

Match the following structures with their corresponding blood supplies:

Diaphragm = Musculophrenic artery Intercostal muscles = Posterior intercostal arteries Anterior chest wall = Internal thoracic artery Upper thoracic wall = Supreme intercostal artery Signup and view all the answers

Match the following functional aspects of respiration with their definitions:

Inhalation = Bringing air into the lungs Exhalation = Releasing air from the lungs Ventilation = Movement of air in and out of the lungs Gas exchange = Transfer of oxygen and carbon dioxide Signup and view all the answers

Match the following thoracic muscles with their specific attributes:

Transversus thoracis = Depresses ribs and costal cartilages Internal intercostals = Internal surfaces of lower ribs near their angles External intercostals = Superior borders of ribs that are the 2nd or 3rd below the muscle origin Serratus posterior = Posterior surface of lower sternum Signup and view all the answers

Match the following anatomical structures with their corresponding blood supply:

Intercostal nerves = Posterior intercostal arteries Thoracic wall = Internal thoracic artery Musculophrenic artery = Superior borders of lower ribs Costal cartilages = Arterial supply from intercostal arteries Signup and view all the answers

Match the following terms related to thoracic wall variations with their descriptions:

Anatomical variation = Differences in texts about muscle innervation Spinal nerve contributions = Common themes in muscle arterial supply Muscle attachments = Variations in origin and insertion points Functionality differences = Normal occurrences in human anatomy Signup and view all the answers

Match the following muscles with their primary role in respiratory mechanics:

Transversus thoracis = Depresses ribs External intercostals = Elevates ribs Internal intercostals = Depresses ribs during expiration Serratus posterior superior = Stabilizes upper ribs Signup and view all the answers

Match the following intercostal arteries with their respective locations:

Superior intercostal artery = First and second intercostal spaces Posterior intercostal arteries = Third to eleventh intercostal spaces Musculophrenic artery = Lower ribs and diaphragm region Internal thoracic artery = Anterior thoracic wall supply Signup and view all the answers

Match the following muscles with their respective blood supply:

Diaphragm = Musculophrenic artery External intercostal mm. = Superior phrenic artery Signup and view all the answers

Match the following muscles with their respective innervation:

Diaphragm = Intercostal nerves External intercostal mm. = Phrenic nerve Signup and view all the answers

Match the following muscles with their origin:

Diaphragm = Costal cartilages of ribs 7-12 External intercostal mm. = Upper borders of ribs Signup and view all the answers

Match the following muscles with their main actions:

Diaphragm = Elevates lower ribs External intercostal mm. = Assist in expiration Signup and view all the answers

Match the following muscles with their insertion:

Diaphragm = Lower ribs External intercostal mm. = Lower borders of adjacent ribs Signup and view all the answers

Match the following muscles with their muscle group:

Diaphragm = Thoracic wall muscles External intercostal mm. = Respiratory muscles Signup and view all the answers

Match the following muscles with their attachment points:

Diaphragm = Costal cartilages 7-12 External intercostal mm. = Upper borders of ribs Signup and view all the answers

Match the following origins with their corresponding muscles:

Xiphoid process = Diaphragm Lower borders of ribs = External intercostal mm. Costal cartilages 7-12 = Diaphragm Upper borders of ribs = External intercostal mm. Signup and view all the answers

Match the following anatomical structures of the thoracic wall with their descriptions:

Ribs = Bones that form the ribcage Intercostal spaces = Spaces between the ribs Innermost intercostal mm. = Muscles located beneath the intercostal mm. Posterior intercostal artery = Artery supplying blood to the back of the ribcage Signup and view all the answers

Match the following terms with their related functions during respiration:

Inspiration = Elevate ribs in inhalation Expiration = Decrease thoracic volume Arteries, supreme = Provide blood supply to upper body Intercostal nerves = Control intercostal muscle contraction Signup and view all the answers

Match the following arteries with their anatomical significance:

Internal thoracic artery = Supplies blood to the anterior thoracic wall Musculophrenic artery = Supplies blood to diaphragm and lower ribs Supreme intercostal artery = Supplies upper posterior intercostal spaces Posterior intercostal artery = Supplies blood to lateral and posterior thorax Signup and view all the answers

Match the following muscles with their anatomical locations:

Pectoralis Major = Pectoral region Serratus Anterior = Lateral surfaces of ribs 1-9 Subclavius = Upper border of 1st rib Subcostal = Costal surface of scapula Signup and view all the answers

Match the following respiratory processes with their corresponding actions:

Elevate ribs in inspiration = Increase volume of thoracic cavity Expiration = Diaphragm relaxes Inhalation = Diaphragm contracts Intercostal muscles contraction = Elevate ribs and expand thorax Signup and view all the answers

Match the following muscles with their innervation:

Pectoralis Major = Pectoral nerves Serratus Anterior = Long thoracic nerve Subclavius = Subclavian nerve Subcostal = Intercostal nerves Signup and view all the answers

Match the following muscles with their blood supply:

Pectoralis Major = Pectoral branch of thoracoacromial artery Serratus Anterior = Lateral thoracic artery Subclavius = Clavicular branch of thoracoacromial artery Subcostal = Intercostal arteries Signup and view all the answers

Match the following components with their roles in the thoracic region:

Ribs = Protect thoracic organs Innermost intercostal mm. = Assist in forced expiration Thoracic wall = Provides structure and support Intercostal spaces = Allow movement of ribcage during respiration Signup and view all the answers

Match the following functions with their respective muscles:

Elevating ribs = Intercostal muscles Stabilizing ribcage = Innermost intercostal mm. Expanding thoracic cavity = Diaphragm Providing blood supply = Intercostal arteries Signup and view all the answers

Match the following muscles with their primary actions:

Pectoralis Major = Adduction of the shoulder Serratus Anterior = Protracts and rotates scapula Subclavius = Anchors and depresses clavicle Subcostal = Depresses ribs during exhalation Signup and view all the answers

Match the following muscles with their respective surfaces:

Serratus Anterior = Costal surface of scapula Subclavius = Inferior surface of middle one-third of clavicle Pectoralis Major = External surface of upper margin of ribs 3-5 Subcostal = Internal surface of ribs Signup and view all the answers

Match the following blood vessels with their significance in the thoracic area:

Internal thoracic artery = Run alongside the sternum Musculophrenic artery = Supplies blood to diaphragm Superior intercostal artery = Branches supply upper intercostal spaces Posterior intercostal arteries = Supply back of the chest wall Signup and view all the answers

Match the following rib features to their anatomical descriptions:

Upper borders of ribs = Attach to vertebrae Lower borders of ribs = Articulate with costal cartilages Intercostal spaces = Facilitate movement of thoracic wall Costal cartilages = Connect ribs to the sternum Signup and view all the answers

Match the following muscles with their corresponding nerves:

Pectoralis Major = Medial and lateral pectoral nerves Serratus Anterior = Long thoracic nerve Subclavius = Subclavian nerve Subcostal = Thoracic spinal nerves Signup and view all the answers

Match the following muscles with their attachments:

Pectoralis Major = Ribs 3-5 Serratus Anterior = Medial border of scapula Subclavius = Clavicle Subcostal = Costal cartilage of ribs Signup and view all the answers

Match the following thoracic terms with their corresponding details:

Posterior intercostal spaces = Located towards the back Intercostal nerves = Provide sensation to thoracic wall Musculophrenic artery = Supplies lateral diaphragm Ribs = Curved bones forming ribcage Signup and view all the answers

Match the following muscles with their respective roles in the shoulder girdle:

Serratus Anterior = Protracts scapula Subclavius = Depresses clavicle Pectoralis Major = Flexes and adducts shoulder Subcostal = Supports ribcage movement Signup and view all the answers

Match the following blood vessels with the muscles they supply:

Pectoral branch = Pectoralis Major Lateral thoracic artery = Serratus Anterior Clavicular branch = Subclavius Intercostal arteries = Subcostal Signup and view all the answers

Match the following terms related to respiration with their descriptions:

Internal intercostal mm. = Muscles involved in expiration Intercostal nerves = Nerves that supply the intercostal muscles Musculophrenic artery = Supplies blood to the diaphragm Thoracic wall = Structure providing protection and support to the thoracic cavity Signup and view all the answers

Match the following features of the ribs with their corresponding characteristics:

Costal grooves = Located on the inferior surface of the ribs Subjacent ribs = Ribs located beneath the upper ribs Upper borders of ribs = Provide attachment for intercostal muscles Prevent pushing out = Function of the internal intercostal muscles Signup and view all the answers

Match the following arteries with their respective areas of supply:

Internal thoracic artery = Supplies blood to the anterior chest wall Superior intercostal artery = Supplies blood to the upper intercostal spaces Musculophrenic artery = Supplies blood to the diaphragm Posterior intercostal artery = Supplies blood to the thoracic wall Signup and view all the answers

Match the following terms with their related respiratory actions:

Inspiration = Drawing in of ribs during inhalation Expiration = Lower ribs during forced exhalation Intercostal spaces = Separation between adjacent ribs Ribs = Support structure for respiratory movements Signup and view all the answers

Match the following components with their respiratory functions:

Intercostal muscles = Aid in the expansion and contraction of the thoracic cavity Diaphragm = Primary muscle of respiration Costal grooves = House intercostal vessels and nerves Thoracic artery = Supplies blood to structures within the thorax Signup and view all the answers

Match the following structures with their roles in respiration:

Ribs = Form the cage protecting the lungs Intercostal muscles = Facilitate rib movement during breathing Subjacent ribs = Help support the upper ribs Internal intercostal mm. = Push air out during expiration Signup and view all the answers

Match the following terms with their specific anatomical associations:

Intercostal artery = Found in the intercostal spaces Thoracic wall = Composed of ribs and associated muscles Costal grooves = Allow passage for vessels and nerves Posterior intercostal artery = Located posteriorly to supply the ribs Signup and view all the answers

Match the following muscle actions with their corresponding outcomes:

Internal intercostal = Draw ribs downward during forced expiration Diaphragm contraction = Increases thoracic volume Intercostal muscles = Stabilize the ribs during respiration Rib elevation = Enhances inhalation process Signup and view all the answers

Match the following muscles with their primary locations:

Internal intercostal mm. = Between adjacent ribs Diaphragm = Separating thoracic and abdominal cavities Intercostal nerves = Running along the lower rib borders Musculophrenic artery = Located near the diaphragm Signup and view all the answers

Match the following processes with their descriptions related to thoracic anatomy:

Inspiration = Rib cage expands as diaphragm contracts Expiration = Ribs lower and diaphragm relaxes Intercostal spaces = Areas for muscle attachment and nerve passage Costal grooves = Holds arteries and nerves close to rib cage Signup and view all the answers

Study Notes

Diaphragm

The diaphragm is a large, dome-shaped muscle that separates the thoracic cavity from the abdominal cavity.
It is responsible for breathing, contracting to draw air into the lungs and relaxing to expel it.
Originates from the xiphoid process, costal cartilages of ribs 7-12, and the lumbar vertebrae L1-L3.
Inserts into the central tendon.
Innervated by the phrenic nerve.
Supplied by the pericardiacophrenic, musculophrenic, posterior intercostal, superior and inferior phrenic arteries.

Thoracic Wall Muscles

The thoracic wall muscles are involved in breathing and maintaining posture, affecting rib movement.
External intercostal muscles support the intercostal spaces during inspiration, elevating the ribs. They originate from the lower border of the subjacent ribs and insert into the upper border of the rib above. They are innervated by the intercostal nerves and supplied by posterior intercostal, supreme intercostal, internal thoracic, and musculophrenic arteries.
Innermost intercostal muscles prevent pushing out or drawing in of intercostal spaces during breathing. They run alongside the external intercostal muscles and have the same origin and insertion points. They are innervated by the intercostal nerves and supplied by the same arteries as external intercostals.
Internal intercostal muscles lower the ribs in forced expiration. They originate from the costal grooves and insert into the upper border of the subjacent ribs. They are innervated by the intercostal nerves and supplied by posterior intercostal, supreme intercostal, internal thoracic, and musculophrenic arteries.
Levatores costarum muscles elevate the ribs. They originate from the transverse processes of C7-T11 vertebrae and insert into the subjacent ribs between the tubercle and angle. They are innervated by posterior rami of thoracic spinal nerves and supplied by posterior intercostal arteries.

Pectoral Region Muscles

Pectoralis major originates from the clavicle, sternum, costal cartilages, and external abdominal oblique aponeurosis and inserts into the lateral lip of the intertubercular sulcus of the humerus. It flexes, adducts, and medially rotates the arm. It is innervated by the medial and lateral pectoral nerves and supplied by the pectoral branch of the thoracoacromial artery, internal thoracic artery.
Pectoralis minor originates from ribs 3-5 and inserts into the coracoid process of the scapula. It protracts and depresses the scapula and rotates it downward. It is innervated by the medial pectoral nerve and supplied by the thoracoacromial artery.

Diaphragm

Originates Xiphoid process, costal cartilages (7-12), L1-L3 vertebrae
Inserts into central tendon
Innervated by phrenic nerve
Blood supply pericardiacophrenic, musculophrenic, posterior intercostal, superior and inferior phrenic arteries
Action draws central tendon down and forward during inspiration

External Intercostal Muscles

Located in the thoracic wall
Originates on lower borders of subjacent ribs
Inserts into upper borders of subjacent ribs
Innervated by intercostal nerves
Blood supply posterior intercostal arteries, supreme intercostal artery, internal thoracic artery, musculophrenic artery
Supports intercostal spaces in inspiration and expiration, elevates ribs in inspiration

Innermost Intercostal Muscles

Located in the thoracic wall
Originates lower borders of subjacent ribs
Inserts into upper borders of subjacent ribs
Innervated by intercostal nerves
Blood supply posterior intercostal arteries, supreme intercostal artery, internal thoracic artery, musculophrenic artery
Prevents pushing out or drawing in of intercostal spaces in inspiration and expiration, lowers ribs in forced expiration

Internal Intercostal Muscles

Located in the thoracic wall
Originates on costal grooves, external surface of upper margin of ribs 3-5
Inserts into upper borders of subjacent ribs
Innervated by intercostal nerves
Blood supply posterior intercostal arteries, musculophrenic artery
Prevents pushing out or drawing in of intercostal spaces in inspiration and expiration, lowers ribs in forced expiration

Pectoralis Minor

Located in pectoral region
Originates on the Coracoid process of scapula
Inserts into medial and lateral pectoral nerves
Innervated by the pectoral branch of the thoracoacromial artery, superior and lateral thoracic arteries
Lowers the lateral angle of the scapula and protracts the scapula

Serratus Anterior

Located in the shoulder region
Originates on lateral surfaces of medial border of ribs 1-9
Inserts into costal surface of scapula
Innervated by long thoracic nerve
Blood supply lateral thoracic artery
Protracts and rotates scapula and holds it against the thoracic wall

Subclavius

Located in the shoulder region
Originates on the upper border of the 1st rib and costal cartilage
Inserts into inferior surface of middle one-third of clavicle
Innervated by subclavian nerve
Blood supply clavicular branch of thoracoacromial artery
Anchors and depresses the clavicle

Subcostal Muscles

Located in the thoracic wall
Originates on the internal surfaces of lower ribs near their angles
Inserts into superior borders of ribs that are the 2nd or 3rd below the muscle origin
Innervated by intercostal nerves
Blood supply posterior intercostal arteries, musculophrenic artery
Depresses ribs

Transversus Thoracis

Located in the thoracic wall
Originates on the internal surfaces of caudal sternum, costal cartilages 2-6
Inserts into posterior surface of costal cartilages
Innervated by intercostal nerves
Blood supply internal thoracic artery
Depresses ribs and costal cartilages

Anatomical Variation

Variations in spinal nerve contribution to muscle innervation
Variations in arterial supply
Variations in muscle attachments
Variations in muscle actions
Anatomical variation is normal

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Description

Test your knowledge on muscle anatomy by matching primary actions, origins, innervations, and more. This quiz covers various anatomical structures and respiratory processes, challenging your understanding of muscle functions and their categorizations.