Thigh Anatomy and Muscle Functions

The video tutorial covers the muscles of the thigh, focusing on the anterior compartment. It explains the arrangement of thigh muscles into three compartments: anterior, medial, and posterior, each with distinct functions and nerve supplies. The anterior compartment, supplied by the femoral nerve, includes the quadriceps femoris group and the sartorius muscle. The tutorial details the origin, insertion, and actions of these muscles, emphasizing their roles in hip and knee movements.

Which compartment of the thigh is known as the extensor compartment?

• Lateral compartment

• Medial compartment

• Anterior compartment

• Posterior compartment

What nerve supplies the anterior compartment of the thigh?

• Obturator nerve

• Sciatic nerve

• Femoral nerve

• Tibial nerve

Where do the iliacus and psoas major muscles insert?

• Lesser trochanter of the femur

• Medial condyle of the femur

• Lateral condyle of the femur

• Greater trochanter of the femur

Which muscle group is responsible for extending the leg at the knee joint?

• Gluteal muscles

• Hamstring muscles

• Quadriceps femoris muscles

• Adductor muscles

What is the origin of the rectus femoris muscle?

• Lesser trochanter

• Greater trochanter

• Anterior inferior iliac spine

• Anterior superior iliac spine

Which muscle is known for its strap-like appearance and runs from the anterior superior iliac spine to the medial surface of the proximal tibia?

• Rectus femoris

• Gracilis

• Vastus lateralis

• Sartorius

What action does the sartorius muscle perform at the hip joint?

• Extension

• Flexion

• Abduction

• Adduction

Which muscles in the anterior compartment act on both the hip and knee joints?

• Adductor muscles

• Rectus femoris and sartorius

• Vastus muscles

• Iliacus and psoas major

Which nerve innervates the muscles of the anterior compartment of the thigh?

• Obturator nerve

• Sciatic nerve

• Tibial nerve

• Femoral nerve

What is the primary action of the quadriceps femoris muscles?

• Flexion of the hip

• Extension of the knee

• Abduction of the thigh

• Adduction of the thigh