Vastus intermedius muscle (3D)

The tutorial covers the vastus intermedius muscle, part of the quadriceps femoris, located in the anterior thigh. It discusses the muscle's anatomy, including its position, innervation by the femoral nerve, and its role in knee extension. The vastus intermedius aids in movements like climbing stairs and rising from a sitting position. The tutorial concludes with a summary of its functions.

Which nerve is responsible for innervating the vastus intermedius muscle?

• Tibial nerve

• Sciatic nerve

• Femoral nerve

• Obturator nerve

Where does the vastus intermedius muscle originate?

• On the upper 2/3 of the shaft of the femur

• On the patella

• On the iliac crest

• On the tibial tuberosity

What is the primary action of the vastus intermedius muscle?

• Rotation of the thigh

• Adduction of the leg

• Extension of the knee

• Flexion of the hip

Which movement is facilitated by the vastus intermedius muscle?

• Rotating the shoulder

• Climbing stairs

• Flexing the wrist

• Bending the elbow

What is the role of the quadriceps femoris group, including the vastus intermedius, in knee movement?

• They assist in knee abduction.

• They are the great extensors of the knee.

• They stabilize the knee joint during rotation.

• They are the primary flexors of the knee.