Dorsal Foot Muscles | Anatomy, Origins, Insertions, & More

The video tutorial covers the muscles of the dorsal foot compartment, focusing on the extensor digitorum brevis and extensor hallucis brevis. It reviews the anterior leg muscles, including extensor digitorum longus and extensor hallucis longus, and explains their functions and insertions. The tutorial also details the intrinsic foot muscles, their origins, and how they differ from extrinsic muscles. Additionally, it discusses the innervation and blood supply of these muscles, highlighting the roles of the deep perineal nerve and dorsalis pedis artery.

Which two muscles are located on the dorsum of the foot?

• Extensor digitorum longus and extensor hallucis longus

• Extensor digitorum brevis and extensor hallucis brevis

• Flexor digitorum longus and flexor hallucis longus

• Flexor digitorum brevis and flexor hallucis brevis

What is the primary function of the extensor digitorum longus?

• Flex the great toe

• Extend the lateral four toes

• Extend the great toe

• Flex the lateral four toes

Where does the extensor hallucis longus insert?

• Middle phalanx of the lateral four toes

• Base of the proximal phalanx of the hallux

• Distal phalanx of the hallux

• Base of the metatarsal bones

What is the origin of the extensor digitorum brevis?

• Proximal phalanx of the hallux

• Distal phalanx of the hallux

• Lateral aspect of the calcaneus

• Medial aspect of the calcaneus

Which muscle assists in extending the big toe at the metatarsophalangeal joint?

• Flexor digitorum brevis

• Flexor hallucis longus

• Extensor hallucis brevis

• Extensor digitorum longus

Which nerve provides innervation to the muscles on the dorsum of the foot?

• Deep peroneal nerve

• Sural nerve

• Superficial peroneal nerve

• Tibial nerve

What is the blood supply to the muscles on the dorsum of the foot?

• Fibular artery

• Dorsalis pedis artery

• Posterior tibial artery

• Medial plantar artery