FiTour Basic Physiology questions and answers

FiTour Basic Physiology questions and
answers
All or none law of skeletal muscle contraction ✔✔Given a threshold or Supra threshold stimuli,
a muscle fiber will contract all the way or not at all.



Sliding Filament Theory ✔✔The actin slides over the myosin pulling the ends of the sarcomere
together creating a contraction and shortening the muscle.



isometric contraction ✔✔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 ✔✔A shortening of the muscle as a result of its contraction



Eccentric Phase ✔✔A lengthening of the muscle during its contraction; resists movement
caused by another force



isometric contraction ✔✔A muscle contraction in which the muscle length is unchanged.



Isokinetic contraction ✔✔A muscle contraction with controlled speed, allowing maximal force
to be applied throughout the range of motion.



Muscle Mass Changes from ✔✔Resistance Training



Hyperplasia Theory ✔✔An increase in muscle size due to muscle fibers splitting and forming
separate fibers.