PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a muscle in under tension, it has to be shortening or lengthening, otherwise it isn’t under tension.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -While under tension, the muscle may lengthen, shorten, or remain the same. Although the term contraction implies shortening, when referring to the muscular system, it means the generation of tension within a muscle fiber.
Detailed explanation-2: -Eccentric contraction occurs when the total length of the muscle increases as tension is produced. For example, the lowering phase of a biceps curl constitutes an eccentric contraction.
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