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In Biology / College | 2025-07-03

Each of the following is found in the A-band of striated muscle, except:
A. Z disc
B. thin filaments
C. H zone
D. thick filaments

Asked by trimedsol

Answer (2)

The A-band of striated muscle contains thick filaments, thin filaments, and the H zone, but not the Z disc, which is located at the boundaries of the sarcomere. Understanding this distinction is vital for studying muscle structure and function. The Z disc separates adjacent sarcomeres, while the A-band provides the muscle's dark band appearance due to the overlap of filaments. ;

Answered by GinnyAnswer | 2025-07-03

The A-band of striated muscle contains thick filaments, thin filaments, and the H zone, but not the Z disc, which is found at the boundaries of sarcomeres. The Z disc helps demarcate separate sarcomeres and is not part of the A-band structure. Therefore, the correct answer is A. Z disc.
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Answered by Anonymous | 2025-07-04

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