which of the following is/are NOT true about the A band? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a it is approximately the length of the thick filament b the H zone is the middle zone of the A band c The Z line is in the very center of the A band d the thick and thin filaments overlap for a portion of the A band e three of the above
Added by Jodi H.
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- The A band corresponds to the length of the thick filament in a sarcomere. - It contains both thick filaments and overlapping thin filaments. - The H zone is the central part of the A band where only thick filaments are present (no thin filament overlap). Show more…
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Which of the following statements about the striated muscles is incorrect? (a) In the centre of each I - band is an elastic fibre (Z-line) which bisects it. (b) Thin filaments are firmly attached to the Z-line. (c) M-line is a fibrous membrane in the middle of A-bands. (d) None of these
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Which of the following statements about the striated muscles is false? 1. Thick filaments in the 'A' band are also held together in the middle of this band by a thin fibrous membrane called ' M' line. 2. In the centre of each 'I' band is an elastic fibre called ' $Z$ ' line which bisects it. 3. The thin filaments are firmly attached to the ' $Z$ 'line. 4. This central part of thick filament, not overlapped by thin filaments is called the ' $\mathrm{H}^{\text {' }}$ zone. (a) All of these (b) Only 2 (c) 1 and 4 only (d) None of these
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