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Types of muscle - vessels along the gastrointestinal tract...

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Types of muscle The human body has three major types of muscle. The muscle type discussed  previously is  striated muscle  because the fibers' overlapping actin and myosin filaments  give it a banded appearance (see Figure  1  ). This muscle is found in the limbs and is  also called  skeletal muscle.  It operates under voluntary control and so is additionally  known as  voluntary muscle.   The second muscle type is  smooth muscle , which has few actin and myosin filaments;  therefore, it has few striations. Smooth muscle is found in the linings of the blood 
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Unformatted text preview: vessels, along the gastrointestinal tract, in the respiratory tract, and in the urinary bladder. Because it operates without voluntary control, it is sometimes called involuntary muscle. The third muscle type is cardiac muscle , which is found in the heart. It has striations because it has multiple actin and myosin filaments, but it is involuntary muscle. The actin and myosin filaments in cardiac muscle exist as intertwined branches that form a conducting network for nerve impulses....
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