Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The semitendinosus is one of the three hamstring muscles located at the back of the thigh, stretching from the pelvis to just below the knee. It plays a crucial role in knee flexion and hip extension.
A group of three muscles, including the semitendinosus, at the back of the thigh responsible for bending the knee and extending the hip.
Knee Flexion: The act of bending the knee by decreasing the angle between the thigh and lower leg, a movement largely facilitated by muscles like the semitendinosus.
Hip Extension: A movement involving an increase in angle between the front of the pelvis and thighs, powered by muscles including the semitendinosus