Pectoral Limbs and Girdle Flashcards by Emma Davies

Q

origin of epitrochlearis

A

surface of latissimus dorsi

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Q

insertion of epitrochlearis

A

olecranon process of ulna

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Q

main action of epitrochlearis

A

extends antebrachium

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Q

origin of biceps brachii

A

small tubercle near dorsal glenoid fossa of scapula

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Q

insertion of biceps brachii

A

bicipital tuberosity of radius

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Q

main actions of biceps brachii

A

flexes antebrachium

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Q

origin of the long head of the tricep brachii

A

deltoid ridge of humerus

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Q

insertion of long head of the tricep brachii

A

the olecranon process of ulna

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Q

main action of long head of the tricep brachii

A

extend antebrachium

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Q

origin of medial head of the tricep brachii

A

posterior border of scapula

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Q

insertion of medial head of the tricep brachii

A

the olecranon process of ulna

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Q

main action of medial head of the tricep brachii

A

extend antebrachium

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Q

origin of lateral head of the tricep brachii

A

shaft of humerus

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Q

insertion of lateral head of the tricep brachii

A

the olecranon process

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Q

main action of lateral head of the tricep brachii

A

extend antebrachium

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Q

origin of brachialis

A

lateral surface of humerus

Q

insertion of brachialis

A

lateral surface of ulna

Q

main action of brachialis

A

flexes antebrachium

Q

origin of supraspinatus

A

supraspinous fossa of scapula

Q

insertion of supraspinatus

A

greater tuberosity of humerus

Q

main action of supraspinatus

A

extends humerus

Q

origin of infraspinatus

A

infraspinous fossa of scapula

Q

insertion of infraspinatus

A

greater tuberosity of humerus

Q

main actions of infraspinatus

A

rotates humerus laterally

origin of subscapularis

sub scapular fossa of scapula

insertion of subscapularis

lesser tuberosity of humerus

main action of subscapularis

adducts humerus

origin of teres major

dorsal third of posterior border of scapula

insertion of teres major

medial surface fo humerus

main action of teres major

flexes and medially rotates humerus

origin of teres minor

posterior border of scapula, just distal to glenoid fossa

insertion of teres minor

greater tuberosity of humerus

main action of teres minor

flexes and laterally rotates humerus