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5 Cards in this Set
- Front
- Back
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Biceps brachii
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Anterior Arm
Origin: short head: tip of coracoid process of scapula Long head: supraglenoid tubercle of scapula Insertion: tuberosity of radius and fascia of forearm via bicipital aponeurosis Innervation: musculocutaneous nerve Function: supinates forearm and flexes it. short head resists dislocation of the shoulder |
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Coracobrachialis
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Anterior Arm
Origin: Tip of coracoid process of scapula Insertion: middle third of medial surface of humerus Innervation: musculocutaneous nerve Function: helps flex and adduct arm, resists dislocation of shoulder |
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Brachialis
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Anterior Arm
Origin: distal half of anterior surface of humerus Insertion: coronoid process and tuberosity ulna Innervation: musculocutaneous and radial nerves Function: flexes forearm in all positions |
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Triceps brachii
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Posterior Arm
Origin: long head- infraglenoid tubercle of scapula. lateral head- posterior surface of humerus, superior to radial groove. Medial Head- posterior surface of humerus, inferior to radial groove Insertion: Proximal end of olecranon of ulna and fascia of forearm Innervation: radial nerve Function: chief extensor of forearm. long head resists dislocation of humerus, especially important during adduction |
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Anconeus
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Posterior to Anterior Arm
Origin: lateral epicondlye of humerus Insertion: lateral suface of olecranon and superior part of posterior surface of ulna Innervation: radial nerve Function: Assists triceps in extending forearm. Stabilizes elbow joint, may abduct ulna during protonation |
