Extensor digitorum longus muscle (3D)

This video tutorial explores the anatomy and functions of the extensor digitorum longus muscle, focusing on its role in toe movements, dorsiflexion, and eversion. It also covers the anatomy of the fibularis tertius muscle and its relationship with the extensor digitorum longus. The tutorial explains the muscle's origins, insertions, and the joints it acts upon, such as the ankle and subtalar joints. The video concludes with a recap of the muscle's functions and its importance in daily activities like walking and running.

Where is the extensor digitorum longus muscle located?

• On the lateral side of the arm

• On the medial side of the foot

• On the posterior side of the leg

• On the anterior side of the leg

Which nerve is responsible for the contraction of the extensor digitorum longus?

• Sural nerve

• Tibial nerve

• Deep fibular nerve

• Superficial fibular nerve

What is the primary origin of the extensor digitorum longus muscle?

• Anterior surface of the humerus

• Posterior surface of the femur

• Medial surface of the fibula

• Lateral condyle of the tibia

What is the insertion point of the fibularis tertius muscle?

• Distal phalanx of the big toe

• Base of the 5th metatarsal

• Lateral condyle of the tibia

• Middle phalanx of the 2nd toe

Which joint is NOT significantly affected by the extensor digitorum longus?

• Ankle joint

• Subtalar joint

• Metatarsophalangeal joints

• Knee joint

What movement does the extensor digitorum longus assist with at the ankle joint?

• Dorsiflexion

• Inversion

• Rotation

• Plantarflexion

What is the role of the extensor digitorum longus in foot movement?

• Flexion of the toes

• Eversion of the foot

• Rotation of the ankle

• Inversion of the foot