Anatomy Exam Anatomy Muscles of the Lower Limb 1

Question 1

Which muscle is the primary hip flexor?

Accepted Answer

Iliopsoas

Answer

The iliopsoas, composed of the iliacus and psoas major, is the primary hip flexor.

Question 2

What is the primary action of the gluteus maximus?

Accepted Answer

Hip extension

Answer

The gluteus maximus is the largest muscle in the body and primarily extends and externally rotates the hip.

Question 3

Which muscles make up the quadriceps femoris group?

Accepted Answer

Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

Answer

The quadriceps femoris consists of the rectus femoris and the three vastus muscles (lateralis, medialis, intermedius).

Question 4

Which nerve innervates the hamstring muscles?

Accepted Answer

Sciatic nerve

Answer

The hamstrings are primarily innervated by the tibial division of the sciatic nerve, except the short head of biceps femoris (common fibular division).

Question 5

What is the origin of the rectus femoris?

Accepted Answer

Anterior inferior iliac spine

Answer

The rectus femoris originates from the anterior inferior iliac spine (AIIS) and the acetabular rim.

Anatomy Exam Practice Test

Anatomy Exam Practice Test

Anatomy Exam Anatomy Muscles of the Lower Limb 1