PHYSIOLOGY
MICROSCOPIC MUSCLE ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What band is normally in the middle of the sarcomere?
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Z Band
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I Band
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A Band
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M Band
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Explanation:
Detailed explanation-1: -Each sarcomere consists of a central A-band (thick filaments) and two halves of the I-band (thin filaments ). The I-band from two adjacent sarcomeres meets at the Z-line. The central portion of the A-band is the M-line, which does not contain actin.
Detailed explanation-2: -Thick and Thin filaments make up a dense part in sarcomere called A Band or Anisotropic band. It constitutes both actin and myosin fibrils and hence the word anisotropic.
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