Arm Anatomy

Flexor Carpi Ulnaris Anatomy: Origin, Insertion, Action

Origin: Humeral head: medial epicondyle via the common flexor tendon
Ulnar head: Medial aspect of the olecranon, the proximal three-fifths of the dorsal ulnar shaft
Insertion: Pisiform, hamate bones, 5th metacarpal
Action: Flexion and adduction of the wrist, aids with flexion of the forearm

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Triceps Brachii Anatomy: Origin, Insertion, Actions

Origin: Long head – Infraglenoid tubercle of the scapula. Lateral head – Posterior and lateral aspect of the humerus. Medial head – Lower posterior surface of the humerus.
Insertion: Posterior surface of the olecranon process of the ulna
Action: Extension of the arm at the elbow, adduction and extension of the arm

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Biceps Brachii Anatomy: Origin, Insertion, Action

Origin: Long head: supraglenoid tubercle of the scapula; Short head: lateral aspect of the coracoid process of the scapula
Insertion: Radial tuberosity
Action: Flexion of forearm, Supinates forearm, Flexion of the arm at the shoulder

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