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Question

What is sarcomere?

A
Part between two H-lines
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B
Part between two A- lines
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C
Part between two I - bands
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D
Part between two z - lines
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Solution

The correct option is D Part between two z - lines
A sarcomere is the basic unit of striated muscle tissue. It is the repeating unit between two Z lines.
H-Zone: a subdivision of the A-Band in the center of the sarcomere where only thick filaments are present.
The interaction between actin and myosin filaments in the A-band of the sarcomere is responsible for the muscle contraction.
The I band is that part of the sarcomere that contains thin filaments.

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