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14 Cards in this Set
- Front
- Back
Triceps Brachii
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ONLY POSTERIOR ARM MUSCLE.
O: infraglenoid tubercle of scapula I: olecranon process of ulna A: forearm extensor (unbend elbow) |
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Biceps Brachii
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Two-headed, superficial anterior arm muscle.
O: coracoid process of scapula I: radial tuberosity A: elbow flexion (bending), supination |
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Brachialis
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Anterior arm muscle deep to biceps brachii on distal humerus.
O: front of distal humerus I: coronoid process of ulna A: forearm flexion (elbow bending--lifts ulna as biceps lifts radius) |
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Brachioradialis
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Superficial lateral forearm muscle from distal humerus to distal forearm.
O: lateral supercondylar ridge of humerus I: base of styloid process of radius A: forearm flexion (elbow bending) synergist |
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Pronator Teres
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Two-headed muscle extending from distal/medial humerus to lateral radius diagonally. Situated between brachioradialis and flexor carpi radialis.
O: medial epicondyle of humerus I: lateral radius, midshaft A: forearm pronation |
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Flexor Carpi Radialis
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Runs diagonally across forearm and is replaced by a flat tendon to the wrist.
O: medial epicondyle of humerus I: base of metacarpals 2/3 A: wrist flexor (bend toward inner arm) |
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Flexor Carpi Ulnaris
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Most medial muscle of anterior forearm group, two-headed, attaches to wrist via long tendon.
O: medial epicondyle of humerus I: pisiform, hamate, metacarpal 5 A: wrist flexor (bend in to anterior) |
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Palmaris Longus
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Muscle between flexor carpi radialis and flexor carpi ulnaris. Long insertion tendon connecting to branching palmar aponeurosis.
O: medial epicondyle of humerus I: palmar aponeurosis A: weak wrist flexor (bend into ant. arm) |
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Flexor Digitorum Superficialis
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Two-headed muscle deep to flexor carpis and palmaris longus which connects to fingers via long cords of tendon
O: medial epicondyle of humerus and coronoid process of ulna I: 4 tendons to middle phalanges 2-5 A: flexes wrist and middle phalanges 2-5 |
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Extensor Carpi Radialis Brevis
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Posterior forearm muscle running deep to extensor carpi radialis longus, paralleling bracioradialis on lateral forearm
O: lateral epicondyle of humerus I: base of metacarpal 3 A: wrist extension/abduction (extensor carpi radialis longus synergist) |
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Extensor Carpi Radialis Longus
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Parallels brachioradialis on lateral posterior forearm. Superficial/lateral to extensor carpi radialis brevis.
O: lateral supracondylar ridge of humerus I: base of metacarpal 2 |
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Extensor Digitorum
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Muscle medial to extensor carpi radialis brevis, inserts via short tendons to fingers
O: lateral epicondyle of humerus I: by 4 tendons to distal phalanges 2-5 A: prime mover of finger extension (pulling back flat) |
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Extensor Carpi Ulnaris
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Most medial of superficial posterior forearm muscles.
O: lateral epicondyle of humerus and posterior border of ulna I: base of metacarpal 5 A: wrist extension (extensor carpi radialis synergist) and wrist adduction (flexor carpi ulnaris synergist) |
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Supinator
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Deep muscle at posterior aspect of elbow, concealed by superficial muscles. Very short
O: lateral epicondyle of humerus I: proximal end of radius A: supination of forearm (biceps brachii synergist) |