Quadriceps femoris muscle

This tutorial covers the quadriceps femoris muscle, detailing its four components: rectus femoris, vastus medialis, vastus lateralis, and vastus intermedius. Each muscle's origin, insertion, and function are explained, highlighting their roles in knee extension and hip flexion. The quadriceps tendon and its significance in knee stability are also discussed. The video concludes with a call to explore more anatomy resources on Kenhub.

Which nerve is responsible for the innervation of the quadriceps femoris?

• Sciatic nerve

• Femoral nerve

• Obturator nerve

• Tibial nerve

Where does the rectus femoris muscle originate?

• Greater trochanter of the femur

• Anterior inferior iliac spine and upper margin of the acetabulum

• Linea aspera of the femur

• Intertrochanteric line of the femur

What is the insertion point of the vastus medialis muscle?

• Lateral condyle of the tibia

• Greater trochanter of the femur

• Anterior inferior iliac spine

• Medial condyle of the tibia

Which muscle is involved in the external rotation of the knee joint?

• Vastus intermedius

• Vastus lateralis

• Vastus medialis

• Rectus femoris

What is the primary function of the quadriceps femoris?

• Rotation of the hip joint

• Adduction of the hip joint

• Extension of the knee joint

• Flexion of the knee joint