PHYSIOLOGY
SLIDING FILAMENT MODEL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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We can tell when a muscle is contracted as the Z lines will be..?
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closer together
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further apart
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moved up
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moved down
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Explanation:
Detailed explanation-1: -During muscle contraction, the thin filaments slide past the thick filaments or M-line. This shortens the sarcomere. During this, the A band which is composed of myosin remains the same. The M line remains in the center of the sarcomere.
Detailed explanation-2: -The sarcomere is the fundamental unit of contraction and is defined as the region between two Z-lines.
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