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Unit Exam CCCUA 2

Muscular System

smooth muscle (visceral) an involuntary non-striated muscle that lines your arteries to help control blood pressure
cardiac muscle involuntary striated muscle found in the walls and foundation of the heart
skeletal muscle striated muscle tissue which is under the control of the somatic nervous system
voluntary muscle muscles that you have the ability to consiously control
involuntary muscle a muscle that contracts without conscious control
muscles origin attached to the immovable bone
muscles insertion attached to the movable bone
tendon connects muscle to bone and is capable of withstanding tension
twitch contractions is a sudden muscle contraction
tetanic contractions occurs in a prolonged and steady state
isometric contractions the muscle fires but there is no movement at a joint
isotonic contractions both the muscle length and the joint angle changes
tonic contractions sustained contraction of a muscle
abduction is a movement which draws a limb out to the side
rotation form of movement in which a bone moves around a central axis
pronation inward roll of the foot during normal motion
adduction is a movement which draws inward toward the median
supination outward roll of the foot during normal motion
dorsiflexion is the movement which decreases the angle between the dorsum of the foot and the leg
plantar flexion is the movement which increases the approximate 90 degree angle between the front part of the foot and the shin
Created by: 1178389236



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