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Muscular System Vocabulary Definitions & Abbreviations

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Question
Answer
Voluntary   under one's control; done by one's choice or desire.  
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Abduction   movement away from the midline.  
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Adduction   movement toward the midline.  
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Cardiac Muscle   forms the walls of the heart and contracts to circulate blood.  
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Circumduction   moving in a circle at a joint, or movig one end of a body part in a circle while the other end remains stationary.  
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Contract   to shorten,decrease in size, or draw together; an agreement between two or more persons.  
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Contractibility   muscle fibers that are stimulated by nerves.  
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Contracture   tightening or shortening of a muscle.  
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Elasticity   allows the muscle to return to its original shape after it has contracted or stretched.  
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Excitability   irritability, the ability to respond to a stimulus such as a nerve impulse.  
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Extensibility   the ability to be stretched.  
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Extension   increasing the angle between two bones, or straightening a body part.  
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Fascia   a tough, sheet-like membrane that covers and protects the tissue.  
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Flexion   decreasing the angle between two bones, or bending a body part.  
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Insertion   the end that moves when the muscle contracts.  
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Involuntary   independent action not controlled by choice or desire.  
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Muscle Tone   state of partial muscle contraction providing a state of readiness to act.  
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Muscular System   bundles of muscle fibers held together by connective tissue.  
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Origin   end of area of a muscle that remains stationary when the muscle contracts.  
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Rotation   movement around a central axis; a turning.  
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Skeletal Muscle   attached to bones and causes body movement.  
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Tendans   fibrous connective tissues that connect muscles to bones.  
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Visceral(smooth)Muscle   found in the internal organs of the body such as those of the digestive system, respitor system, blood vessels, and eyes.  
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abd   abduction  
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ACL   anterior cruciate ligament  
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add   adduction  
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ADL   activities of daily living  
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EMG   electromyography  
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EMS   electric muscle stimulator  
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IM   intramuscular  
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MN   myoneural  
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MS   musculoskeletal, muscle strength  
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