Sciatic nerve innervates muscles of the posterior thigh from "summary" of Bd Chaurasia's Human Anatomy, Volumes 3 & 4 by B. D. Chaurasia
The sciatic nerve, the largest nerve in the human body, emerges from the sacral plexus and travels down the posterior thigh. It is derived from the ventral rami of the spinal nerves L4, L5, S1, S2, and S3. The sciatic nerve innervates the muscles of the posterior thigh, providing motor function to these muscles. Some of the key muscles in the posterior thigh that receive innervation from the sciatic nerve include the biceps femoris, semitendinosus, and semimembranosus. These muscles are responsible for various movements at the hip and knee joints, such as extension and flexion. Th...
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