Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Medial olecranon, upper three quarters of anterior and medial surface of ulna as far round as subcutaneous border and narrow strip of interosseous membrane
INSERTION: Distal phalanges of medial four fingers. Tendon to index finger separates early
ACTION: Flexes distal interphalangeal joints, then secondarily flexes proximal interphalangeal and metacarpophalangeal joints and wrist
NERVE: Median nerve (anterior interosseous) (C6, 7) / ulnar nerve (C7, 8)

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