Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Deep part (horizontal):supinator crest and fossa of ulna. Superficial part (downwards): lateral epicondyle and lateral ligament of elbow and annular ligament
INSERTION: Neck and shaft of radius, between anterior and posterior oblique lines
ACTION: Supinates forearm. Only acts alone when elbow extended
NERVE: Posterior interosseous nerve (C5, 6)

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