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muscles review quest

QuestionAnswer
what are the general functions of the muscular system? - producing movement -maintaining posture -generating heat -regulating organ volume -stabilize joins
define the four characteristitcs of muscular tissues? Irritability extensibility contractility elasticity
irritability ability to respond to a stimulus
extensibility they can be stretched
contractility they can be shortened
elasticity the return to normal length after stretching
what are the structures of the sarcomere? actin myosin
actin myofiliments, thin, light colored protein
myosin myofiliments, thick, dark colored
describe the sliding-filament theory of muscle contraction actin filaments slide over myosin filaments which shortens the muscle fivers
origin the attachment to the immovable bones
insertion the attachment to the movable bones
flexion bending of a joint or decreasing the angle between bones
extension straightening of a joint or increasing the angle between two bones
abduction moving a body part away from the midline of the body
adduction moving a body part toward the midline of the body
plantar flexion ankle movement pointing the foot downward
dorsiflexion ankle movement bringing the foot towards the shin
rotation turning on a single axis
Created by: user-1989369
 

 



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