Semimembranosus muscle

Muscles · Latin: Musculus semimembranosus

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The semimembranosus muscle is the most medial of the three hamstring muscles in the thigh.

It is so named because it has a flat tendon of origin.

It lies posteromedially in the thigh, deep to the semitendinosus muscle.

It extends the hip joint and flexes the knee joint.

Definition from Wikipedia, CC BY-SA 4.0.