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Muscle Vocab

Muscle Vocabulary (Ch. 6)

Muscular System System of the body composed of over 600 muscles
excitability irritability, the ability to respond to stimulus
contractability muscle fibers that are stimulated by nerves contract, or become short and thick
extensibility the ability to be stretched
elasticity allows the muscle to return to it's original shape after it has contracted or stretched
cardiac muscle forms wall of heart and contracts to circulate blood
Viscerel (Smooth muscle) found in the internal organs, blood vessels, and eyes
involuntary muscle that acts without conscious thought
skeletal muscle attached to the bones and causes body movement
voluntary when a person has conscious control over the muscle
tendons strong, though, connective tissue choords
fascia tough sheet like membrane that protects tissue
origin end of a muscle/bone that doesn't move
insertion end of a muscle/bone that moves
adduction moving body part toward midline
abduction moving body part away from midline
flexion decreasing the angle between two bones
extension increasing the angle between two bones
rotation turning a body part on it's axis
circumduction moving in a circle at a joint
muscle tone state of muscle where it is always contracted
contracture lack of use of a muscle, which results in tightness of a flexor muscle
Created by: anreyes



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