Anatomy and Functions of Lower Leg Muscles

1. What is the muscle located in the back part of the lower leg that forms part of the calf?

QUADRICEPS FEMORIS

BICEPS BRACHII

PECTORALIS MAJOR

The correct answer is GASTROCNEMIUS, which is a superficial two-headed muscle that runs from just above the knee to the heel. BICEPS BRACHII is a muscle in the upper arm, PECTORALIS MAJOR is a muscle in the chest, and QUADRICEPS FEMORIS is a group of muscles in the thigh.

Explanation

The correct answer is GASTROCNEMIUS, which is a superficial two-headed muscle that runs from just above the knee to the heel. BICEPS BRACHII is a muscle in the upper arm, PECTORALIS MAJOR is a muscle in the chest, and QUADRICEPS FEMORIS is a group of muscles in the thigh.

2. What is the soleus?

A species of bird.

A type of seashell.

A tropical fruit.

The soleus is a calf muscle located in the posterior part of the lower leg.

Explanation

The soleus is a calf muscle located in the posterior part of the lower leg.

3. What is the primary function of the tibialis anterior muscle?

Plantarflexion of the foot

Flexion of the knee

Extension of the elbow

The tibialis anterior muscle is responsible for dorsiflexion of the foot, which involves pulling the foot upwards towards the shin.

Explanation

The tibialis anterior muscle is responsible for dorsiflexion of the foot, which involves pulling the foot upwards towards the shin.

4. What is the function of the Flexor Digitorum Longus muscle in the back?

To rotate the shoulder

To elevate the scapula

To extend the fingers

The Flexor Digitorum Longus muscle, located in the back, is responsible for flexing the toes. It does not have any role in extending the fingers, rotating the shoulder, or elevating the scapula.

Explanation

The Flexor Digitorum Longus muscle, located in the back, is responsible for flexing the toes. It does not have any role in extending the fingers, rotating the shoulder, or elevating the scapula.

5. What is the main function of the EXTENSOR DIGITORUM LONGUS muscle located on the front of the body?

Flexing the toes

Bending the knee

Lifting the foot

The EXTENSOR DIGITORUM LONGUS muscle is responsible for extending the toes, not flexing the toes, lifting the foot, or bending the knee.

Explanation

The EXTENSOR DIGITORUM LONGUS muscle is responsible for extending the toes, not flexing the toes, lifting the foot, or bending the knee.

6. Which muscle is responsible for plantarflexion and eversion of the foot?

Tibialis anterior

Soleus

Rectus femoris

The peroneus longus is located on the lateral side of the lower leg and is responsible for plantarflexion and eversion of the foot. Rectus femoris is a muscle in the thigh responsible for knee extension, tibialis anterior is a muscle in the shin responsible for dorsiflexion and inversion of the foot, and soleus is a muscle in the calf responsible for plantarflexion.

Explanation

The peroneus longus is located on the lateral side of the lower leg and is responsible for plantarflexion and eversion of the foot. Rectus femoris is a muscle in the thigh responsible for knee extension, tibialis anterior is a muscle in the shin responsible for dorsiflexion and inversion of the foot, and soleus is a muscle in the calf responsible for plantarflexion.