extensor hallucis brevis (muscle)

ex·ten·sor hal·lu·cis bre·vis (mus·cle)

[TA] intrinsic muscle of dorsum of foot considered by some anatomists as the medial belly of the extensor digitorum brevis muscle; origin, dorsal calcaneus; insertion, via a stout tendon into the dorsal aspect of the base of the proximal phalanx of the great toe; action, extends great toe; nerve supply, deep fibular. Synonym(s): musculus extensor hallucis brevis [TA], short extensor (muscle) of great toe