LUMBRICALS
| ORIGIN Four tendons of flexor digitorum profundus. Radial 2: radial side only (unipennate). Ulnar 2: cleft between tendons ( bipennate) |
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| INSERTION Extensor expansion (dorsum of proximal phalanx ) of fingers 2-5 radial side |
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| ACTION Flex metacarpophalangeal joints and extend interphalangeal joints of fingers |
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| NERVE Lateral 2: median nerve (C8, T1). medial 2: deep branch of ulnar nerve (C8, T1) |