Which muscle is located on the dorsal surface of the foot?

Which muscle is located on the dorsal surface of the foot?

• A. Extensor Digitorum Brevis
• B. Extensor Hallucis Longus
• C. Tibialis Posterior
• D. Flexor Digitorum Brevis

Answer: (A)

Muscles on the top surface of the foot are the ones positioned on the dorsum and primarily help extend the toes. Extensor Digitorum Brevis sits directly on the dorsum of the foot and fans out to extend the toes at the toe joints, making it the one located on the dorsal surface. Extensor Hallucis Longus, while its tendon reaches the dorsum to help extend the big toe, is a muscle that resides in the leg, not on the surface of the foot itself. Tibialis Posterior is a deep leg muscle whose tendon travels toward the plantar (sole) side, not the top. Flexor Digitorum Brevis is a plantar intrinsic muscle, located on the sole rather than the top of the foot. So the muscle on the dorsal surface is Extensor Digitorum Brevis.

Muscles on the top surface of the foot are the ones positioned on the dorsum and primarily help extend the toes. Extensor Digitorum Brevis sits directly on the dorsum of the foot and fans out to extend the toes at the toe joints, making it the one located on the dorsal surface. Extensor Hallucis Longus, while its tendon reaches the dorsum to help extend the big toe, is a muscle that resides in the leg, not on the surface of the foot itself. Tibialis Posterior is a deep leg muscle whose tendon travels toward the plantar (sole) side, not the top. Flexor Digitorum Brevis is a plantar intrinsic muscle, located on the sole rather than the top of the foot. So the muscle on the dorsal surface is Extensor Digitorum Brevis.