21.During a(n) ____________________ isotonic contraction, the contraction resists the stretching : 1417099
21.During a(n) ____________________ isotonic contraction, the contraction resists the stretching of the muscle.
22.The additional oxygen that must be taken into the body after strenuous exercise in order to return the tissues to pre-exercise conditions is called the ____________________.
23.The metabolic process called ____________________ (a two-word answer) provides the most ATP molecules for use by muscle fibers contracting over a long period of time.
24.The most common need for additional oxygen after rigorous exercise is for the repayment of the ____________________, when activity was being supported by creatine phosphate and glycolysis.
25.____________________ fatigue in a muscle occurs when acetylcholine is no longer available in adequate amounts to stimulate muscle fibers.
26.____________________ is the pigment that can store small amounts of oxygen in the skeletal muscle.
27.Slow-oxidative fibers are type ____________________ fibers; fast glycolytic fibers are type ____________________ fibers; and fast, oxidative fibers are type ____________________ fibers.
28.The ____________________ system is the descending motor pathway that mediates performance of fine, discrete voluntary movements of the hands.
29.____________________ system is the descending pathway that is primarily concerned with regulation of posture involving involuntary movements of the trunk and limbs.
30.____________________ refers to paralysis of the legs resulting from lower spinal cord injury.