Define Muscles.ved tu sirf mera hai samjha?
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Muscle: Muscle is the tissue of the body which primarily functions as a source of power. ... Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart muscle is called "cardiac muscle." Muscle that is in the walls of arteries and bowel is called "smooth muscle."
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Muscles and nerve fibers allow a person to move their body and enable the internal organs to function.
There are more than 600 muscles in the human body. A kind of elastic tissue makes up each muscle, which consists of thousands, or tens of thousands, of small muscle fibers. Each fiber comprises many tiny strands called fibrils.
Impulses from nerve cells control the contraction of each muscle fiber. A muscle’s strength depends mainly on how many fibers are present.
To fuel a muscle, the body makes adenosine triphosphate (ATP), which muscle cells turn into mechanical energy.