FiTour Basic Physiology Exam
Questions and Answers
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.
isometric contraction - Answer -A muscle contraction in which the force of the muscle is
greater than the resistance, resulting in joint movement with shortening of the muscle..
Concentric Phase - Answer -A shortening of the muscle as a result of its contraction
Eccentric Phase - Answer -A lengthening of the muscle during its contraction; resists
movement caused by another force
isometric contraction - Answer -A muscle contraction in which the muscle length is
unchanged.
Isokinetic contraction - Answer -A muscle contraction with controlled speed, allowing
maximal force to be applied throughout the range of motion.
Questions and Answers
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.
isometric contraction - Answer -A muscle contraction in which the force of the muscle is
greater than the resistance, resulting in joint movement with shortening of the muscle..
Concentric Phase - Answer -A shortening of the muscle as a result of its contraction
Eccentric Phase - Answer -A lengthening of the muscle during its contraction; resists
movement caused by another force
isometric contraction - Answer -A muscle contraction in which the muscle length is
unchanged.
Isokinetic contraction - Answer -A muscle contraction with controlled speed, allowing
maximal force to be applied throughout the range of motion.
