Term
| Skeletal Muscle Functions |
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Definition
1. Produce skeletal movement
2. Maintain posture and body position
3. Support soft tissues
4. Guard entrances and exits
5. Maintain body temperature
6. Store nutrient reserves |
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Term
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Definition
| A dense layer of collagen fibers that surrounds the entire muscle |
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Term
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Definition
Divides the skeletal muscle into a series of compartments, each containing a bundle of muscle fibers called a fascicle.
Contains collagen and elastin, blood vessels and nerves |
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Term
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Definition
Surrounds the individual skeletal muscle fibers. Loosely interconnects adjacent muscle fibers.
Elastic layer; contains capillary networks and myosatellite(stem) cells and nerve fibers. |
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Term
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Definition
| Groups of embryonic cells |
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Term
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Definition
| Plasma membrane of a muscle fiber, surrounds the sarcoplasma |
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Term
| Transverse tubules(T tubules) |
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Definition
Narrow tubes that are continuous with the sarcolemma and extend deep into the sarcoplasm.
They are filled with extracellular fluidand form passageways through the muscle fiber. Electrical impulses carried by the sarcolemma travel along the T tubules to the cell interior. |
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Term
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Definition
| An electrical impulse that triggers muscle fiber contraction. |
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Term
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Definition
Cylindrical structuresthat actively shorten and are responsible for skeletal muscle fiber contraction
1-2 micrometer diameter |
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Term
| Myofilaments: Thick and Thin |
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Definition
Thin: Composed primarily of actin
Thick: Composed primarily of myosin |
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