Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Humeral head: common flexor origin of medial epicondyle. Ulnar head: aponeurosis from medial olecranon and upper three quarters subcutaneous border of ulna
INSERTION: Pisiform, hook of hamate, base of 5th metacarpal via pisohamate and pisometacarpal ligaments
ACTION: Flexes and adducts wrist. Fixes pisiform during action of hypothenar muscles
NERVE: Ulnar nerve (C6, 7) (by communication from lateral cord)

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