Posterior compartment thigh muscles

The video tutorial covers the muscles of the posterior thigh, focusing on the semitendinosus, semimembranosus, and biceps femoris. It explains their origins, attachments, and unique features, such as the dual innervation of the biceps femoris. The tutorial also discusses the formation of the Pes Anserinus and the primary actions of these muscles, including knee flexion and hip extension. The innervation by the tibial nerve is highlighted, along with clinical relevance for medical boards.

Which muscles form the Pes Anserinus?

• Semimembranosus, biceps femoris, and sartorius

• Sartorius, semitendinosus, and semimembranosus

• Gracilis, semimembranosus, and biceps femoris

• Sartorius, gracilis, and semitendinosus

What makes the biceps femoris muscle unique?

• It originates from the tibial tuberosity

• It is innervated by the femoral nerve

• It has dual innervation

• It is the only muscle that extends the hip

Which nerve innervates the long head of the biceps femoris?

• Common fibular nerve

• Tibial nerve

• Femoral nerve

• Obturator nerve

What is one primary action of the hamstring muscles?

• Ankle dorsiflexion

• Knee flexion

• Hip flexion

• Knee extension

Which nerve primarily innervates the posterior thigh muscles?

• Femoral nerve

• Obturator nerve

• Tibial nerve

• Sciatic nerve