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Human Anatomy: Muscle Groups


Human Anatomy



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Muscle Function & Other Pertinent Medical Information
- DORSAL INTEROSSEI -
ORIGIN: Bipennate from inner aspects of shafts of all metacarpals
INSERTION: Proximal phalanges and dorsal extensor expansion on radial side of index and middle fingers and ulnar side of middle and ring fingers
ACTION: Abduct from axis of middle finger. Flex metacarpophalangeal joint while extending interphalangeal joints
NERVE: Deep branch of ulnar nerve (T1)













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