Muscle - Definition

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Muscles are the tissues of the human body composed of muscle fibers, which contract during body movements.
656 there are muscles in the human body.

There are three types:
  • The heart muscle, which is different from other muscle, especially because it is subject to the influence of hormones, and contracts involuntarily.
  • Smooth muscles, such as those found in the stomach, are voluntary muscles that work without stimulus.
  • Skeletal muscle, they are related to bones and allow the move.

The shape of the muscle is elongated, flat or circular.