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Related Flashcards
Cards In This Set
| Front | Back |
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Where can you find smooth muscle?
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Blood vessel walls
layers of the gut erector pili in the dermis |
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What is plasma membrane called in muscle?
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Sarcolemma
|
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What is cytoplasm called in muscle?
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Sarcoplasm
|
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What is the smooth ER call in muscle?
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Sarcoplasmic reticulum
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Describe the cell shape and size of skeletal, cardiac and smooth muscle
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Skeletal -- long and cylindrical
cardiac -- blunt-ended and branched smooth -- spindle-shaped and short |
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Describe the nucleus of skeletal, cardiac and smooth muscle
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Skeletal -- multinucleated; nuclei is located in the periphery
cardiac -- 1 to 2 nuclei; nuclei is centrally located smooth -- 1 nucleus; nuclei is centrally located |
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Describe the striations of skeletal, cardiac and smooth muscle
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Skeletal -- A & I bands
cardiac -- A & I bands smooth -- none |
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Describe the Z discs of skeletal, cardiac and smooth muscle
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Skeletal -- has Z discs present
cardiac -- has Z discs present smooth -- has dense bodies, instead of Z discs |
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Describe the T-tubules of skeletal, cardiac and smooth muscle
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Skeletal -- T-tubules are present
cardiac -- T-tubules are present smooth -- has caveolae instead of T-tubles |
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Describe the gap junctions of skeletal, cardiac and smooth muscle
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Skeletal -- has no gap junctions
cardiac -- has intercalated discs smooth -- has gap junctions |
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Describe the calcium binding of skeletal, cardiac and smooth muscle
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Skeletal -- Ca2+ binds to troponin
cardiac -- Ca2+ binds to troponin smooth -- Ca2+ binds to calmodulin |
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Describe the regeneration of skeletal, cardiac and smooth muscle
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Skeletal -- limited regeneration
cardiac -- no regeneration smooth -- high regeneration |
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What is the function of skeletal muscle?
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Responsible for voluntary movement of skeleton and organs
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Why is the nucleus of skeletal muscle cell peripherally located?
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The skeletal muscle cell is composed of filaments, and these push the nuclei to the side
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Are A bands dark or light? I bands?
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A bands -- dark
I bands -- light |
