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Not including H-bands, titin, thick filaments, thin filaments


What structure is indicated by yellow box structure?


What does the arrow point to?


What is B?

A band

The dark areas of a myofibril that corresponds to the areas where thick filaments are present

I band

The light areas of a myofibril that contain only thin filaments

Z line

A protein disk within the I band that anchors the thin filaments


What is A?


What does arrow point to?


What is C?


Center of A band that contains only the thick filament


Region in center of H zone that holds thick filaments together at center of sarcomere


Protein that makes up thin filaments


Protein that makes up thick filaments


What is labeled with a letter A?


What is labeled with a letter B?


the segment of a myofibril that is the unit of contraction, extending from one z line to the next z line

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