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FiTour Basic Physiology Questions and Answers 100% Verified
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FiTour Basic Physiology Questions and Answers 100% Verified
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FiTour Basic Physiology Questions and Answers100% Verified
Physiology - ANSWER The study of human body function
3 types of muscles - ANSWER smooth (involuntary),cardiac (involuntary)
skeletal/striated (voluntary) About 400
skeletal muscle structure - ANSWER Muscle (fasciculus - a bundle of muscle
fibers surrounded by perimyseum)
Muscle fiber
Myofibril
Sarcomere - fundamental unit of contraction
Actin- thin filament
Myosin - thick filament
Motor unit - the functional unit of muscular contraction that includes a motor
nerve and the muscle fiber that it's branches innervate.
Muscle Contraction - ANSWER Muscles apply force by contracting and pulling
on bones.
All or none law of skeletal muscle contraction - ANSWER Given a threshold or
Supra threshold stimuli, a muscle fiber will contract all the way or not at all.
Sliding Filament Theory - ANSWER The actin slides over the myosin pulling the
ends of the sarcomere together creating a contraction and shortening the muscle.
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