The small contracting region of a muscle fiber is called _________________ and a protein involved in the contraction is _________________.

Respuesta :

The sarcomere is the small contracting region of a muscle fiber, which has the function of housing different elements responsible for muscle contraction, these proteins are actin and myosin.

What is the sarcomere?

The sarcomere is defined as the smallest functional and anatomical unit of striated muscle, that is, the voluntary muscle, which contains the contractile proteins, actin and myosin.

Characteristics of the sarcomere

  • The sarcomere has a very complex structure, as it is made up of a series of "bands" that move in the contractile movement.

  • Actin and myosin, which are the proteins inside the sarcomere, slide over each other, varying the size of the sarcomere, then this together generates muscle tension.

Therefore, we can conclude that the sarcomere is the smallest and most important region of ​​the muscle fiber that contains actin, myosin, myofilaments and myofibrils.

Learn more about the sarcomere here: https://brainly.com/question/7209548

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Universidad de Mexico