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16 terms

Sarcomere

Not including H-bands, titin, thick filaments, thin filaments
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A-band
What structure is indicated by yellow box structure?
M-line
What does the arrow point to?
I-band
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
H-zone
What is A?
Z-line
What does arrow point to?
Sarcomere
What is C?
H-zone
Center of A band that contains only the thick filament
M-line
Region in center of H zone that holds thick filaments together at center of sarcomere
Actin
Protein that makes up thin filaments
Myosin
Protein that makes up thick filaments
Actin
What is labeled with a letter A?
Myosin
What is labeled with a letter B?
Sarcomere
the segment of a myofibril that is the unit of contraction, extending from one z line to the next z line