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Muscular System

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Megan Sirak

on 7 December 2011

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Transcript of Muscular System

Muscular System Parts 3 Types of muscles - Smooth, Cardiac, and Skeletal muscles Smooth Muscles-
involuntary, found in digestive system, blood vessels, bladder, and most internal organs Skeletal Muscles-
voluntary muscles, 650 in the body, attached to the skeleton Cardiac Muscles-
involuntary, found in the heart

2 Types of muscle function -
Voluntary and involuntary Voluntary Muscles-
Brain sends nerve signals to muscles
Ex: bicept Involuntary Muscles-
Work on own
Ex: heart 2 Types of fibers -
fast and slow twitch Fast Twitch-
used in anaerobic metabolism, used for short bursts of strength Slow Twitch-
used during extended periods Functions Main Functions Provide movement to body
Ex: walk and lift Gives stability and Posture Possible Disorders Causes Genetis, hormones, infections, poisons, and cancer Myasthenia Gravis (MG) Symptons include weakness, droopy eyelids, and fatigue Muscular Dystrophy Increasing muscular weakness and eventual death Effects of Drugs Steroids Heroine Alcohol Creates muscle mass but also causes extreme weak points
Ex: Muscle tears
Can cause heart attacks and enlarged heart Abuse can lead to droopy appearence, weak muscles, and muscle mass loss. Impacts nerve functions and slows down muscles Ways to maintain Muscular System Excercise! Run Lift Weights Work out Don't do drugs Balanced diet Bibliography
 "Disorders Of The Muscular System." Http://science.jrank.org. Net Industries and Its Licensors. Web. 05 Dec. 2011.
 Evoy, Ken. "The Muscular System." The Human Body. Human-body-facts.com. Web. 06 Dec. 2011. <http://www.human-body-facts.com/muscular-system.html>.
 Muscular System Functions." UNP. Jelsoft Enterprises. Web. 06 Dec. 2011. <http://www.unp.me/f150/muscular-system-functions-143366/>.
 Stoddart, S.l. "Parts of the Muscular System | EHow.com." EHow | How to Videos, Articles & More - Discover the Expert in You. | EHow.com. Web. 06 Dec. 2011. <http://www.ehow.com/about_5397681_parts-muscular-system.html>.
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