Semitendinosus muscle (3D)

The video tutorial explores the semitendinosus muscle, a posterior thigh muscle part of the hamstrings. It covers the muscle's location, nerve supply via the tibial nerve, and its origin from the ischial tuberosity. The semitendinosus is involved in extending the thigh at the hip joint, flexing the leg at the knee joint, and facilitating internal rotation when the knee is flexed. The tutorial concludes with a recap of these functions.

Which nerve innervates the semitendinosus muscle?

• Femoral nerve

• Tibial nerve

• Obturator nerve

• Peroneal nerve

What is the common name for the group of muscles that includes the semitendinosus?

• Adductors

• Quadriceps

• Hamstrings

• Calf muscles

Where does the semitendinosus muscle insert?

• Lateral surface of the tibia

• Anterior surface of the femur

• Medial surface of the tibia

• Head of the fibula

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

• Extension of the thigh

• Adduction of the thigh

• Flexion of the thigh

• Abduction of the thigh

Which movement is facilitated by the semitendinosus at the knee joint when the knee is flexed?

• Extension

• Abduction

• Internal rotation

• External rotation