15. Sarcomere Bands & Zones

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9 Terms

1
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What is the visual appearance of the I band?

Light band

2
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What boundary structure is centered in the middle of the I band?

Z disc

3
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What myofilaments are contained exclusively within the I band?

Actin

4
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What is the visual appearance of the A band?

Dark band

5
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What span defines the total length of the A band?

Entire length of myosin

6
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What are the two designated sub-regions contained within the A band?

  1. Zone of overlap, 2. H zone
7
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What occurs in the zone of overlap within the A band?

Actin and myosin overlap

8
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Where is the H zone located within a sarcomere?

Center of sarcomere

9
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What myofilament is contained exclusively within the H zone?

Myosin