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Muscular System

Muscular System. By Chelsea Rench M’lee Hobbs Kate Zola. Muscle Types. Cardiac Muscle. Also known as myocardium. The Cardiac muscle is called an involuntary muscle because conscious thought doesn’t control its contractions.

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Muscular System

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  1. Muscular System By Chelsea Rench M’lee Hobbs Kate Zola

  2. Muscle Types

  3. Cardiac Muscle • Also known as myocardium. • The Cardiac muscle is called an involuntary muscle because conscious thought doesn’t control its contractions. • The thick muscles of the heart contract to pump blood out and then relax to let blood back in after it has circulated through the body.

  4. Smooth Muscle • Smooth muscle like the Cardiac muscle are involuntary. • They make up internal organs like your stomach, throat, small intestine and all other except the heart. • Smooth muscle are usually spherical as most human cells are.

  5. Skeletal System • Skeletal muscles are the only voluntary muscles of the body that make up the muscular system. • They’re all muscles that move your bones and show external movement. • Unlike the other two classes skeletal muscle contain multiple nuclei because of its hard size.

  6. Random Facts • There are over 600 muscles in your body. • 40% of your body weight is your muscles. • It takes 17 muscles to smile and 42 to frown. • The eye is the hardest working muscle. • Largest muscle in your body is your buttocks. • Muscles in the root of your hair give your goose bumps.

  7. Sites • http://www.besthealth.com/besthealth/bodyguide/reftext/html/musc_sys_fin.html • Http://library.thinkquest.org/2935 • Http://www2.asd.wednet.edu • http://www.yuckydiscovery.com • http://www.omnimedicalsearch.com/im_smooth+muscle+pictures.html

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