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What is the longest muscle in the human body?Multiple ChoiceSemitendinosusSartoriusIliopsoasSemimembranosusErector spinae

Question

What is the longest muscle in the human body?

  • Semitendinosus
  • Sartorius
  • Iliopsoas
  • Semimembranosus
  • Erector spinae
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Solution

The longest muscle in the human body is the Sartorius. It runs down the length of the thigh from the hip to the knee. This muscle is responsible for flexing, abducting, and laterally rotating the hip. It is often referred to as the "tailor's muscle" because it allows a person to sit cross-legged, similar to the way tailors used to sit while working.

Here is a brief overview of the other options:

  • Semitendinosus and Semimembranosus are part of the hamstring group located at the back of the thigh but are shorter than the Sartorius.
  • Iliopsoas is a deep muscle group involved in hip flexion, but it cannot be compared in length to the Sartorius.
  • Erector spinae is a group of muscles that run along the spine but is not considered in direct comparison for length with the Sartorius.

Thus, the correct answer is Sartorius.

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