ANATOMY
MUSCULOSKELETAL AND SOFT TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a muscle contracts concentrically, it ____
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gets longer
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gets shorter
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gets thinner
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grows hair
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Explanation:
Detailed explanation-1: -In a concentric contraction, the muscle tension rises to meet the resistance then remains stable as the muscle shortens. During eccentric contraction, the muscle lengthens as the resistance becomes greater than the force the muscle is producing.
Detailed explanation-2: -For a muscle cell to contract, the sarcomere must shorten. However, thick and thin filaments-the components of sarcomeres-do not shorten. Instead, they slide by one another, causing the sarcomere to shorten while the filaments remain the same length.
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