| interossei | <anatomy, muscle> Palmar Division: Origin, medial side, second metacarpal and lateral side, fourth and fifth metacarpals; insertion, medial side, base first phalanx, index, ring and little fingers and tendon extensor digitorum; action, adduct the fingers, flex the first phalanx, extend second and third. Dorsal Division: Origin, adjacent sides, second through fifth metacarpals; insertion, lateral aspects of phalanges; action, abduct fingers, flex first phalanx, extend second and third (06 Mar 2000) |
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| musculi interossei | Muscles which arise from and run between the long (metacarpal and metatarsal) bones of the hand and foot, extending to and producing movement of the digits. See: dorsal interosseous muscles of foot, dorsal interosseous muscles of hand, palmar interosseous muscle, plantar interosseous muscle. Synonym: musculi interossei. (05 Mar 2000) |
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| musculi interossei dorsalis manus | Four muscles in the hand; origin, sides of adjacent metacarpal bones; insertion, proximal phalanges and extensor expansion, first on radial side of index, second on radial side of middle finger, third on ulnar side of middle finger, fourth on ulnar side of ring finger; action, abduct fingers 2-4 from the axis of the middle finger, nerve supply, ulnar. Synonym: musculi interossei dorsalis manus. (05 Mar 2000) |
| musculi interossei dorsalis pedis | Four muscles in the foot; origin, from sides of adjacent metatarsal bones; insertion, first into medial, second into lateral side of proximal phalanx of second toe, third and fourth into lateral side of proximal phalanx of third and fourth toes; action, abduct toes 2-4 from an axis through the second toe; nerve supply, lateral plantar. Synonym: musculi interossei dorsalis pedis. (05 Mar 2000) |
| interossei s. |
Souques' phenomenon.
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