PHYSIOLOGY
SARCOMERE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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which of these is a region that only contains actin filaments?
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A band
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H zone
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M line
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I band
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Explanation:
Detailed explanation-1: -The I bands contain only thin (actin) filaments, whereas the A bands contain thick (myosin) filaments. The myosin and actin filaments overlap in peripheral regions of the A band, whereas a middle region (called the H zone) contains only myosin.
Detailed explanation-2: -I bands (or isotropic bands): it is called the light band that contains only the thin filament (actin). The thin filament lies between the two thick filaments. Z disc: it is the area where two actin filaments connect and transverse the I bands.
Detailed explanation-3: -both the I band and the A band contain thin filaments of actin.
There is 1 question to complete.