Dorsal muscles of the foot (3D)

This video tutorial explores the anatomy and functions of two small dorsal muscles in the foot: the extensor hallucis brevis and the extensor digitorum brevis. It covers their origins, insertions, and the joints they act upon, as well as their innervation by the deep fibular nerve. The tutorial explains how these muscles assist in the extension of the big toe and the 2nd to 4th digits, supporting larger muscles in these movements. The video concludes with a recap of the key functions of these muscles.

What joints do the extensor digitorum brevis muscle act upon?

Discuss the innervation of the extensor hallucis brevis and extensor digitorum brevis muscles.

What is the significance of the deep fibular nerve in relation to the muscles discussed?