Different Kinds of Muscle

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Muscles can be categorized as skeletal, cardiac, and smooth muscle.

Skeletal muscle is striated (it looks striated, or striped, under a microscope because the actin and myosin of the muscle is arranged in distinct sarcomeres). Besides being striated, the muscle fibers are elongated and multi-nucleated. They usually attach to bone and are usually voluntary. They are part of the body wall, as opposed to in the viscera, and are innervated accordingly ...