(lumbrical muscles) Type: Term Definitions: 1. four intrinsic muscles of second layer of plantar muscles; origin, first: from tibial side of tendon to second toe of flexor digitorum longus; second, third, and fourth: from adjacent sides of all four tendons of this musculus; insertion, tibial side of extensor tendon on dorsum of e...
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The lumbricals (lumbricales manus) consist of four small, fleshy tissues that originate from the tendons of the deep flexor muscle, the flexor digitorum profundus and insert in the extensor tendon of each of the four fingers. The lumbricals are innervated by the radial and ulnar nerves and supplied by the palmar arch from the deep metacarpal artery...
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