UNIT 5: Label the parts of the Sarcomere

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12 Terms

1
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Z- line

What is 1?

<p>What is 1?</p>
2
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Actin (thin filaments)

What is 2?

<p>What is 2?</p>
3
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Myosin (thick filaments)

What is 4?

<p>What is 4?</p>
4
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H zone

What is 6?

The region at the center of an A band of a sarcomere that is made up of myosin only. The H zone gets shorter (and may disappear) during muscle contraction.

<p>What is 6?<br><br>The region at the center of an A band of a sarcomere that is made up of myosin only. The H zone gets shorter (and may disappear) during muscle contraction.</p>
5
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A-band

What is 7?

<p>What is 7?</p>
6
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I-band

What is 8?

<p>What is 8?</p>
7
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WHERE IS Actin?

AD

<p>AD</p>
8
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WHERE IS THE Z Line?

AE
the line formed by the attachment of actin filaments between two sarcomeres of a muscle fiber in striated muscle cells

<p>AE<br>the line formed by the attachment of actin filaments between two sarcomeres of a muscle fiber in striated muscle cells</p>
9
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WHERE IS THE Sarcomere?

BC

<p>BC</p>
10
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WHERE IS THE A Band?

AC
Dark band
Actin and myosin filaments are both present in this dense region

<p>AC<br>Dark band<br>Actin and myosin filaments are both present in this dense region</p>
11
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WHERE IS THE Myosin MYOFILAMENT?

BD

<p>BD</p>
12
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I Band

AB
region containing thin filaments only

<p>AB<br>region containing thin filaments only</p>

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