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14 Cards in this Set
- Front
- Back
Subscapularis |
Chief medial rotator of arm |
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Supraspinatus |
Initiates abduction of arm |
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Infraspinatus |
Rotates arm laterally, helps hold head of humerus in cavity |
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Teres minor |
Rotates arm laterally |
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Coracobrachialis |
Flexes and adducts arm, synergist of pectoralis major |
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Pectoralis major |
Adducts and medially rotates arm against resistance |
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Deltoid |
Prime mover of arm abduction when all its fibers contract simultaneously |
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Teres major |
Extends, medially rotates, and adducts arm |
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Triceps branchii |
Prime mover, powerful forearm extensor |
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Biceps branchii |
Flexes and supinates forearm |
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Brachialis |
Major forearm flexor |
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Brachioradialis |
Synergist in flexing forearm |
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Muscles originate anterior to should joint |
Pectoralis major, coracobrachialis, and anterior fibers of deltoid Flex the arm |
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Muscles originate posterior to shoulder joint |
Latissimus dorsi, and posterior fibers of deltoid, teres major Extend the arm |