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lumbricals (lumbrical muscles) of foot

 

Definition: 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 each of the four lateral toes; action, flex the proximal and extend the middle and distal phalanges; nerve supply, lateral (second to fourth lumbricals) and medial (first lumbrical) plantar.

Synonym(s): musculus lumbricalis pedisTA

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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