SEMIMEMBRANOSUS

Semimembranosus muscle

Origin of Semimembranosus

Superior lateral quadrant of the ischial tuberosity.

Insertion of Semimembranosus

Posterior surface of the medial tibial condyle.

Muscle Action/Function of Semimembranosus

Extends the thigh, flexes the knee, and also rotates the tibia medially, especially when the knee is flexed.

Arterial (Blood) Supply of Semimembranosus

Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery.

Semimembranosus Video

Semimembranosus - Muscles of the Hip and Thigh

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