PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Each sarcomere ____
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extends from one Z line to the next Z line.
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has an H zone in the center.
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contains parts of two bands, the I bands and the A band.
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contains overlapping myosin and actin filaments.
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All of the above.
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Explanation:
Detailed explanation-1: -What are the parts of a sarcomere? The different parts of a sarcomere include: A band, I band, H zone, Z line, myosin, actin, tropomyosin, thick filaments and thin filaments.
Detailed explanation-2: -There are between 2, 000 and 2, 500 sarcomeres found together in linked coils in each 10 millimetres of muscle fibre. To watch the sarcomeres in action, the researchers first had to isolate a single myofibril (the basic rod-like units which make up muscle tissue) and then zoom in on an individual sarcomere.
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