Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.
The extensor hallucis brevis muscle arises from the dorsal side of the calcaneous to insert at the big toe's proximal phalanx, serving to help extend the big toe. The hallux (plural, hallucis) are muscles pertaining to the big toe. The extensor hallucis longus are muscles used in extending the toe; the flexor hallucis longus are used in flexing it and moving it to the side.
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