PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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action potential
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twitch
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fused, or complete, tetanus
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graded response
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Detailed explanation-1: -The force generated by a contracting muscle is called muscle tension. Muscle tension can also be generated when the muscle is contracting against a load that does not move, resulting in two main types of skeletal muscle contractions: isotonic contractions and isometric contractions (Figure 10.4.
Detailed explanation-2: -The amount of tension produced in a muscle contraction depends on two factors: the number of muscle fibers activated, and the frequency of neural stimulation to the muscle fibers.
Detailed explanation-3: -To move an object, referred to as load, the sarcomeres in the muscle fibers of the skeletal muscle must shorten. The force generated by the contraction of the muscle (or shortening of the sarcomeres) is called muscle tension.