Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Common extensor origin on anterior aspect of lateral epicondyle of humerus
INSERTION: Extensor expansion of little finger-usually two tendons which are joined by a slip from extensor digitorum at metacarpophalangeal joint
ACTION: Extends all joints of little finger
NERVE: Posterior interosseous nerve (C7, 8)

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