Extensor hallucis longus muscle (3D)

The video tutorial explores the anatomy and functions of the extensor hallucis longus muscle, emphasizing its role in hallux extension and dorsiflexion. It details the muscle's location, attachments, and the joints it influences, such as the ankle and toe joints. The tutorial highlights the importance of these movements in daily activities like walking and squatting, and concludes with a recap of the muscle's key functions.

Why is the big toe, or hallux, considered important?

• It helps in balancing the body.

• It is used for gripping objects.

• It is the largest toe.

• It is not important.

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

• Femoral nerve

• Tibial nerve

• Deep fibular or peroneal nerve

• Sciatic nerve

Where does the extensor hallucis longus originate from?

• The calcaneus

• The tibia and the fibula

• The metatarsals

• The middle portion of the anterior surface of the fibula and the interosseous membrane

Which joints are primarily affected by the extensor hallucis longus?

• Shoulder and elbow joints

• Ankle, metatarsophalangeal, and interphalangeal joints of the big toe

• Knee and hip joints

• Wrist and finger joints

What is the primary movement facilitated by the extensor hallucis longus?

• Flexion of the fingers

• Extension of the hallux or great toe

• Flexion of the knee

• Rotation of the ankle

How does dorsiflexion of the foot help during walking?

• It makes the foot more flexible.

• It stabilizes the foot and prevents tripping.

• It helps in jumping higher.

• It reduces the need for shoes.

What role does the extensor hallucis longus play in squatting?

• It helps in extending the knee.

• It reduces the pressure on the hips.

• It prevents the center of gravity from moving too far backwards.

• It increases the strength of the squat.