Semitendinosus muscle

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Semitendinosus Muscle

The Semitendinosus muscle (pronunciation: /ˌsɛmiˌtɛndɪˈnoʊsəs ˈmʌsəl/) is one of the three hamstring muscles that are located at the back of the thigh. The other two are the biceps femoris and the semimembranosus muscle.

Etymology

The term "Semitendinosus" is derived from Latin, with "semi" meaning half, and "tendinosus" referring to a tendon. This is due to the muscle's unique structure, where half of it is muscular and the other half is a long tendon.

Function

The Semitendinosus muscle plays a crucial role in human locomotion, including walking and running. It helps to flex the knee and extend the hip, and also aids in medially rotating the knee.

Anatomy

The Semitendinosus muscle originates from the ischial tuberosity, the lower part of the pelvis, and inserts into the upper part of the tibia, one of the two bones in the lower leg. It is situated between the other two hamstring muscles, the biceps femoris and the semimembranosus.

Related Terms

  • Hamstring: A group of three muscles at the back of the thigh that includes the Semitendinosus muscle.
  • Biceps Femoris: One of the three hamstring muscles, located laterally to the Semitendinosus muscle.
  • Semimembranosus Muscle: One of the three hamstring muscles, located medially to the Semitendinosus muscle.
  • Ischial Tuberosity: The part of the pelvis from where the Semitendinosus muscle originates.
  • Tibia: The bone in the lower leg where the Semitendinosus muscle inserts.

External links

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