extensor digitorum brevis (muscle)
intrinsic muscle of dorsum of foot; origin, dorsal surface of calcaneus; insertion, by four tendons fusing with those of the extensor digitorum longus, and by a slip attached independently to the base of the proximal phalanx of the great toe; action, extends four lateral toes (II–V); nerve supply, deep fibular.Synonym(s): musculus extensor digitorum brevisTA, musculus extensor brevis digitorum, short extensor (muscle) of toes
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