Skeletal muscle fiber

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6 Terms

1
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Triad in muscle fiber

The arrangement of two terminal cisternae with a T tubule between them is called this.

<p>The arrangement of two terminal cisternae with a T tubule between them is called this.</p>
2
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Sarcolemma

The plasma membrane in muscle fibers is called this. It can conduct an electrical signal called an action potential.

<p>The plasma membrane in muscle fibers is called this. It can conduct an electrical signal called an action potential.</p>
3
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Myofibril

Thick and thin filaments, which are bundled into this, occupy 80% of the volume of the fiber.

<p>Thick and thin filaments, which are bundled into this, occupy 80% of the volume of the fiber.</p>
4
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T-tubule

The sarcolemma has tube-like invaginations called these that transmit the action potential deep inside the fiber to widened area of the sarcoplasmic reticulum.

<p>The sarcolemma has tube-like invaginations called these that transmit the action potential deep inside the fiber to widened area of the sarcoplasmic reticulum.</p>
5
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Terminal cisternae of sarcoplasmic reticulum

Widened areas of the sarcoplasmic reticulum.

<p>Widened areas of the sarcoplasmic reticulum.</p>
6
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Sarcoplasmic reticulum

Endoplasmic reticulum that is specialized to store calcium ions.

<p>Endoplasmic reticulum that is specialized to store calcium ions.</p>