Podcast
Questions and Answers
What is the function of the pectoralis major muscle?
What is the function of the pectoralis major muscle?
- Protraction of the scapula
- Extension, abduction, lateral rotation of the arm
- Steady the clavicle by preventing excessive movement at the shoulder girdle
- Flexion, adduction, medial rotation of the arm (correct)
Which nerve supplies the pectoralis minor muscle?
Which nerve supplies the pectoralis minor muscle?
- Long thoracic nerve
- Lateral pectoral nerve
- Medial pectoral nerve (correct)
- Cephalic vein
Where does the pectoralis minor muscle originate from?
Where does the pectoralis minor muscle originate from?
- Anterior outer surface of the upper 8 ribs
- Front of sternum & Upper 6 costal cartilages
- Upper surface of 1st rib at costochondral junction (correct)
- Anterior outer surface of the upper 6 costal cartilages
What structures pierce the clavipectoral fascia?
What structures pierce the clavipectoral fascia?
What is the action of the serratus muscle?
What is the action of the serratus muscle?
What is the nerve supply for the pectoralis minor muscle?
What is the nerve supply for the pectoralis minor muscle?
Which muscle is responsible for protraction of the scapula and upward rotation?
Which muscle is responsible for protraction of the scapula and upward rotation?
What is the action of the subclavius muscle?
What is the action of the subclavius muscle?
Where does the cephalic vein pierce through in the clavipectoral fascia?
Where does the cephalic vein pierce through in the clavipectoral fascia?
What is the origin of the pectoralis major muscle's clavicular head?
What is the origin of the pectoralis major muscle's clavicular head?
Flashcards
Pectoralis Major Function
Pectoralis Major Function
Flexion, adduction, and medial rotation of the arm
Pectoralis Minor Nerve
Pectoralis Minor Nerve
Medial pectoral nerve
Pectoralis Minor Origin
Pectoralis Minor Origin
Upper surface of 1st rib at costochondral junction
Clavipectoral Fascia Structures
Clavipectoral Fascia Structures
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Serratus Anterior Action
Serratus Anterior Action
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Pectoralis Minor Nerve Supply
Pectoralis Minor Nerve Supply
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Scapula Protractor
Scapula Protractor
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Subclavius Muscle Action
Subclavius Muscle Action
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Cephalic Vein Piercing
Cephalic Vein Piercing
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Pectoralis Major Clavicular Head Origin
Pectoralis Major Clavicular Head Origin
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Pectoral Muscle
Pectoral Muscle
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Shoulder Muscle
Shoulder Muscle
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Arm Movement
Arm Movement
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Shoulder Blade Movement
Shoulder Blade Movement
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Movement Prevention
Movement Prevention
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Thoracic Muscles
Thoracic Muscles
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Study Notes
Pectoralis Muscles
- The pectoralis major muscle is responsible for adduction, flexion, and medial rotation of the humerus.
- The pectoralis minor muscle is supplied by the medial pectoral nerve.
- The pectoralis minor muscle originates from the third to fifth ribs.
Clavipectoral Fascia
- The clavipectoral fascia is pierced by the cephalic vein, thoracoacromial artery, and lymphatic vessels.
Serratus Muscle
- The serratus muscle is responsible for rotating the scapula and moving it forward and upward.
Muscle Functions
- The subclavius muscle is responsible for depressing the shoulder and elevating the thorax.
- The pectoralis major muscle's clavicular head originates from the medial half of the clavicle.
- The serratus muscle is responsible for protraction of the scapula and upward rotation.
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Description
Test your knowledge on the pectoral region and pectoral muscles. Learn about the definition, anatomy, and structure of the pectoral region, including the attachments and functions of the pectoral muscles.
