Vastus medialis muscle 3D

This tutorial explores the vastus medialis muscle, part of the quadriceps femoris, highlighting its anatomy, innervation by the femoral nerve, and its role in knee extension and internal rotation. The video provides a detailed look at the muscle's attachment points and its involvement in movements like walking and climbing stairs. A summary of the muscle's functions concludes the tutorial.

Which nerve is responsible for innervating the vastus medialis muscle?

• Sciatic nerve

• Femoral nerve

• Obturator nerve

• Tibial nerve

What is the primary function of the vastus medialis muscle at the knee joint?

• Flexion of the knee

• Extension of the knee

• Abduction of the knee

• Adduction of the knee

Where does the vastus medialis muscle originate?

• Greater trochanter

• Linea aspera and intertrochanteric line

• Lesser trochanter

• Medial epicondyle

In addition to knee extension, what minor role does the vastus medialis play?

• Internal rotation of the knee

• External rotation of the knee

• Extension of the hip

• Flexion of the hip

What movement is involved when the vastus medialis assists in internal rotation of the knee?

• Lowering the thigh downwards

• Rotating the lower leg away from the midline

• Rotating the lower leg towards the midline

• Lifting the thigh upwards