Multiple Choice
In the context of the sliding filament theory, which filament is thicker within the sarcomere?
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9. Muscle Tissue
Sliding Filament Theory and the Sacromere
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Which of the following regions of the sarcomere contains overlapping thick and thin filaments?
A
Z line
B
A band
C
I band
D
H zone
Verified step by step guidance1
Understand the structure of a sarcomere: A sarcomere is the basic contractile unit of muscle fiber, composed of thick (myosin) and thin (actin) filaments.
Identify the regions of the sarcomere: The sarcomere is divided into several regions, including the Z line, A band, I band, and H zone.
Define the A band: The A band is the region of the sarcomere that contains the entire length of the thick filaments. It also includes the area where thick and thin filaments overlap.
Define the I band: The I band is the region that contains only thin filaments and is located on either side of the Z line.
Define the H zone: The H zone is the central part of the A band where there are only thick filaments and no overlap with thin filaments.
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