Synovial Joints/Identify Articulations/Extrinsic muscle introduction
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Questions and Answers

Which of the following is NOT a component of the synovial joint?

  • Articular Surface
  • Epiphysis (correct)
  • Joint Cavity
  • Joint Capsule

    • Match the following to the correct term

    Fibrous layer = Outer protective layer Synovial layer = inner productive layer Joint Cavity = contains synovial fluid Synovial bursa = Fluid filled ballon providing protection to a tendon from a bone

    A fluid filled sleeve that surrounds a tendon allowing easier gliding best describes

  • Synovial bursa
  • Retinaculum
  • Annular ligament
  • Synovial tendon (correct)

    • Match the following to it's correct description

    <p>Compound = Joint between two or more bones Congruent = Bones fit well together Hinge = Flexion and extension only Incongruent = Bones do NOT fit well together</p> Signup and view all the answers

    The Aconeal process of the ulna fits into the ___________ of the humerus during extension

    <p>olecranon fossa of the humerus</p> Signup and view all the answers

    The carpal canal connsists of the ____________, __________, and ____________

    <p>palmar carpal ligament, accessory carpal bone, flexor retinaculum</p> Signup and view all the answers

    The three muscles that run through the carpal canal are ______, _________, and ___________

    <p>SDF, DDF, FCR</p> Signup and view all the answers

    Match the following to the correct term

    <p>Tendon of origin = Where the muscle starts: proximal attachment Muscle head/belly = part of the muscle that contracts Tendon of insertion = Where the muscle ends: distal attachment Retinaculum = Fibrous band that holds down tendons to a bone</p> Signup and view all the answers

    Extrinsic muscles of the forelimb originate:

    <p>head, neck and/or trunk</p> Signup and view all the answers

    Extinsic muscles of the forelimb insert on:

    <p>Limb</p> Signup and view all the answers

    The two extrinsic muscles that contribute to the thoracic sling are the serratrus ventralis m and pectoral mm.

    <p>True</p> Signup and view all the answers

    The trapezius mm has 3 heads

    <p>False</p> Signup and view all the answers

    The "sling muscle" refers to the ___________

    <p>serratus ventralis m.</p> Signup and view all the answers

    The thoracic sling consists of the serratus ventralis m and the pectoral mm. What are these pectoral muscles?

    <p>All the above</p> Signup and view all the answers

    Match the muscles acting on the shoulder and scapula to its correct action

    <p>Teres major = Shoulder flexor Coracobrachialis = Shoulder extensor Long head of the triceps = Shoulder flexor Supraspinatus = Shoulder extensor</p> Signup and view all the answers

    The pneumonic: Let's Do This Thing refers to the Shoulder flexors. Name these shoulder flexors

    <p>The shoulder flexors are the long head of the triceps, deltoideus, teres major and teres minor</p> Signup and view all the answers

    The pneumonic: We flex our elbows when we play BB (basketball) refers to elbow flexors. Name these elbow flexor muscles

    <p>Biceps brachii and Brachialis</p> Signup and view all the answers

    The pneumonic: Show me your TAT refers to the elbow extensors. What are the muscles that extend the elbows?

    <p>The long head, medial head, and accessory head of the triceps, Aconeus and the Tensor Fascia Antebrachium</p> Signup and view all the answers

    The biceps brachii and the long head of the triceps do not act on the glenohumeral joint.

    <p>False</p> Signup and view all the answers

    The pneumonic: Please Play Saving me refers to the muscles involved in pronation or supination of the antebrachium. Name these muscles.

    <p>Pronator teres m, pronator quadratus m, supinator m</p> Signup and view all the answers

    The pronator teres m, prontator quadratus m, and supinator lie under the extensor carpi radialis m.

    <p>True</p> Signup and view all the answers

    The extensors of the carpus and digits originate from the _______ of the humerus

    <p>Lateral</p> Signup and view all the answers

    The extensors of the carpi and digits have 4 muscles. Which of the following is considered the "traitor"; as it actually flexes the carups and digits?

    <p>Ulnaris lateralis</p> Signup and view all the answers

    The pneumonic : get ECLU refers to the extensors of the carpus and digits. Name these muscles

    <p>Extensor carpi radialis, Common digital extensor, lateral digital extensor, ulnaris lateralis</p> Signup and view all the answers

    The flexors of the carpus and digits originate from the ________ epicondyle of the humerus

    <p>Medial</p> Signup and view all the answers

    Which of the following is NOT a flexor of the carpus and digits

    <p>All the above</p> Signup and view all the answers

    The pneumonic: Fly Silly Duck Fly refers to the flexors of the carpus and the digits. Name these muscles

    <p>Flexor carpi ulnaris (ulnar head and humeral head), Super digital flexor, Deep digital flexor, Flexor carpi radialis</p> Signup and view all the answers

    Match the ligaments of the digits to the appropriate boxed location

    <p>Palmar Annular Ligament = Red Proximal Digital Annular Ligament = Green Distal Digital Annular Ligament = Blue N/A = N/A</p> Signup and view all the answers

    Where does the superfical pectoral originate and insert?

    <p>Cranial Sternum, Crest of greater tubercle of humerus</p> Signup and view all the answers

    Choose the correct origin and insertion for the deep pectoral.

    <p>Sternum, lesser tubercle of humerus</p> Signup and view all the answers

    Choose the correct origin and insertion for the Brachiocephalicus

    <p>Clavicular intersection; mid dorsal raphe/craniodistal humerus</p> Signup and view all the answers

    Identify this articular surface.

    <p>Infraglenoid tubercle</p> Signup and view all the answers

    Identify the surfaces the red and black line are referring to.

    <p>Black: Supraglenoid tubercle, Red: Glenoid cavity</p> Signup and view all the answers

    Match the following to the color coded portions of scapula

    <p>Blue = Caudal border Purple = Dorsal border of Scapula Red = Ventral Angle Green = Cranial Angle</p> Signup and view all the answers

    Match the terms to the color coded portions

    <p>Red = Infraspinous Fossa Yellow = Acromion Process Green = Infraglenoid tubercle Black = Supraglenoid tubercle</p> Signup and view all the answers

    Match the following to color coded areas

    <p>Red = Serrated face Green = Subscapular Fossa Black = Scapular Neck Brown = Scapular Notch</p> Signup and view all the answers

    Match the following to the correct colors

    <p>Yellow = Crest of the Greater Tubercle Blue = Greater Tubercle Black = Lesser Tubercle Red = Intertubercular Groove</p> Signup and view all the answers

    Match the following to the correct color

    <p>Yellow = Deltoid tuberosity Red = Tricipital Line Black = Greater Tubercle &quot;Spheroidal shape&quot; = Head of Humerus</p> Signup and view all the answers

    The teres minor and latissimus dorsi are inserted on the teres major tuberosity

    <p>False</p> Signup and view all the answers

    What is the name of this articulation?

    <p>Teres Major Tuberosity</p> Signup and view all the answers

    What is the name o this outlined portion of the humerus?

    <p>The brachialis groove</p> Signup and view all the answers

    What muscle originates in the proximal part of this groove, spirals around the bone in the groove so that distally it lies on the craniolateral surface?

    <p>The brachialis</p> Signup and view all the answers

    Match to correct statement

    <p>Ribs 1-10 = Head articulates with cranial costal fovea of same # vertebrae and caudal costal fovea of vertebrae before Ribs 11-13 = Head articulates with cranial costal fovea of same # vertebrae Supraspinous ligament = T1-Cd3 Nuchal ligament = C2-T1</p> Signup and view all the answers

    List the lateral stabilizers of the forelimb

    <p>Teres minor, deltoid, supraspinatus and infraspinatus</p> Signup and view all the answers

    Select the muscles that aid in medial stabilization of the forelimb

    <p>Teres major</p> Signup and view all the answers

    List all the extrinsic muscles

    <p>Superficial pectoral, deep pectoral, latissimus dorsi, trapezius, rhomboideus, brachiocephalicus, serratus ventralis , omotransversarius , cutaneous trunci</p> Signup and view all the answers

    The sternocephalicus is an extrinsic muscle

    <p>False</p> Signup and view all the answers

    List the intrinsic muscles

    <p>Deltoid, infraspinatus, supraspinatus, teres major, teres minor, subscapularis, coracobrachialis</p> Signup and view all the answers

    Match to correct origin and insertion

    <p>Extensor carpi radialis Origin = lateral supracondylar crest Common digital extensor Origin = Lateral epicondyle Extensor carpi radialis Insertion = Base of MC II and III Common digital extensor : insertion = Extensor processes of digital phalanges: II, III, IV and IV</p> Signup and view all the answers

    Match to insertion points to correct muscle

    <p>Extensor carpi radialis = Base of MC II and II Common digital extensor = distal phalanges: II, III, IV, IV Lateral digital extensor = Proximal ends of phalanges II, IV, V Ulnaris lateralis = Proximal end of MC V and accessory carpal bone</p> Signup and view all the answers

    The pronator teres originates on the medial epicondyle of the humerus

    <p>True</p> Signup and view all the answers

    The supinator originates on the medial epicondyle of the humerus

    <p>False</p> Signup and view all the answers

    The ________ ligament is important for claw retraction in cats. It attaches the ________ phalanx to the ________ phalanx

    <p>The dorsal ligament is important for claw retraction in cats. It attaches the middle phalanx to the distal phalanx</p> Signup and view all the answers

    What is the name of the retinaculum that holds the biceps brachii down?

    <p>Transverse humoral retinaculum</p> Signup and view all the answers

    What portion of the scapula does the biceps brachii originate?

    <p>Biceps brachii originate on supraglenoid tubercle</p> Signup and view all the answers

    The biceps brachii inserts on the ulnar and radial tuberosities

    <p>False</p> Signup and view all the answers

    Study Notes

    Synovial Joint Components

    • Components of a synovial joint include articular cartilage, synovial fluid, and joint capsule.
    • An example of a fluid-filled sleeve is the synovial sheath, which reduces tendon friction during movement.

    Joint Structures and Terms

    • The Aconeal process of the ulna fits into the trochlea of the humerus during extension.
    • The carpal canal consists of the carpal bones, flexor retinaculum, and tendons of flexor muscles.
    • Muscles passing through the carpal canal are flexor carpi radialis, flexor digitorum superficialis, and flexor pollicis longus.

    Extrinsic Muscles of the Forelimb

    • Extrinsic muscles of the forelimb originate from the axial skeleton.
    • These muscles insert onto the limb bones, allowing movement of the forelimb.
    • The serratus ventralis and pectoral muscles contribute to the thoracic sling, aiding in limb stability.

    Shoulder and Elbow Movements

    • The "sling muscle" refers to muscles that support the limb, specifically the serratus ventralis and pectoral muscles.
    • Shoulder flexors are identified with the mnemonic "Let's Do This Thing" and include the biceps brachii and deltoid muscles.
    • Elbow flexors associated with the mnemonic "We flex our elbows when we play BB" include the biceps brachii and brachialis.
    • Elbow extensors can be remembered with "Show me your TAT," which includes the triceps brachii and anconeus.

    Pronation and Supination

    • For pronation and supination of the antebrachium, the mnemonic "Please Play Saving me" identifies the pronator teres, pronator quadratus, and supinator muscles.
    • Extensors of the carpus and digits originate from the lateral epicondyle of the humerus and include several key muscles.

    Flexors and Other Muscles

    • The flexors of the carpus and digits originate from the medial epicondyle of the humerus, including flexor carpi radialis and flexor digitorum profundus.
    • The mnemonic "Fly Silly Duck Fly" lists the main flexors of the carpus and digits.
    • The muscle considered the "traitor" is the flexor carpi ulnaris, as it flexes rather than extends.

    Ligaments and Anatomy

    • Superficial pectoral originates from the cranial sternum and inserts on the humerus.
    • Deep pectoral originates from the sternum and ribs, inserting along the humerus.
    • Brachiocephalicus originates from the clavicular intersection and inserts on the mastoid process and the ventral neck.

    Shoulder and Humeral Features

    • The teres minor and latissimus dorsi insert on the teres major tuberosity of the humerus.
    • Identifying the articular surfaces and markings of the humerus is crucial for understanding shoulder joint mechanics.
    • A muscle that lies in the proximal groove and spirals is the teres major, originating in the axillary region.

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    Description

    This quiz identifies knowledge of synovial joints, articulation identification on scapula and humerus, with introduction of extrinsic muscles

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