Posterior Thigh Anatomy and Nerve Supply

<p>Popliteal surface of the femur and popliteus muscle (B)</p> Signup and view all the answers

<p>Popliteal artery (D)</p> Signup and view all the answers

<p>Five (C)</p> Signup and view all the answers

<p>Femoral artery (C)</p> Signup and view all the answers

<p>Diamond-shaped (D)</p> Signup and view all the answers

<p>Semimembranosus (A), Biceps Femoris (C)</p> Signup and view all the answers

<p>Hip extension and knee flexion (A)</p> Signup and view all the answers

<p>Sciatic nerve (A)</p> Signup and view all the answers

<p>Head of fibula (A)</p> Signup and view all the answers

<p>It divides into the tibial and common fibular nerves proximal to the knee. (C)</p> Signup and view all the answers

<p>Adductor magnus (B)</p> Signup and view all the answers

<p>Providing blood supply to the posterior compartment of the thigh (D)</p> Signup and view all the answers

<p>Adductor magnus (A)</p> Signup and view all the answers

The posterior compartment of the thigh is a muscle group located at the back of the thigh. This compartment contains the hamstring muscles which act as both hip extensors and knee flexors.

The hamstrings are a group of four muscles that help extend the hip and flex the knee. These muscles play a crucial role in walking, running, and kicking.

Biceps femoris is a muscle in the posterior thigh, contributing to hip extension and knee flexion. It has two heads - long and short.

Semitendinosus is a long muscle in the posterior thigh that extends the hip and flexes the knee. It gets its name because it has a long tendon.

Semimembranosus is a muscle in the posterior thigh that helps extend the hip and flex the knee. This muscle is known for its membrane-like structure.

The adductor magnus is a large muscle in the inner thigh, responsible for hip adduction, extension, and medial rotation. It has a hamstring part which contributes to knee flexion.

The sciatic nerve is a large nerve that travels down the back of the leg. It provides the nerve supply to the posterior compartment of the thigh (hamstrings).

The sciatic nerve branches into two nerves near the knee - the tibial nerve and the common fibular nerve. These nerves continue to innervate the leg and foot.

The tibial part of the sciatic nerve innervates muscles in the posterior thigh and continues down the leg to the sole of the foot.

The common fibular nerve part of the sciatic nerve innervates the short head of biceps femoris in the thigh and continues to the lateral and anterior compartments of the leg and foot.

A diamond-shaped space behind the knee joint formed by muscles of the thigh and leg, acting as a transition zone between the two.

The lateral boundary of the popliteal fossa, formed by muscles like biceps femoris and gastrocnemius above and below.

The medial boundary of the popliteal fossa, formed by muscles like semimembranosus and gastrocnemius above and below.

The floor of the popliteal fossa, made up of the femur and popliteus muscle.

The roof of the popliteal fossa, composed of skin and fascia.

The continuation of the femoral artery after passing through the adductor hiatus, branching into the anterior and posterior tibial arteries.