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13 Cards in this Set
- Front
- Back
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what is the sarcolemma?
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the cell membrane of a muscle cell
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what is the sarcoplasm?
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the cytoplasm of a muscle cell
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what is the sarcoplasmic reticulum?
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the endoplasmic reticulum of a muscle cell
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what are myofilaments?
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thread like proteins in a muscle cell
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What is are the three proteins of thin filaments?
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actin,toponin, and tropomyosin
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actin?
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contractile protein that binds to cross bridges of myosin
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Troponin?
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regular protein that has binding sites for calcium ions
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tropomyosin?
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regular protein that covers binding sites of actin, then move off and expose the binding site when calicum binds with troponin
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What protein is thick filament?
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myosin
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myosin?
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thick, contractile protein that is involved with movement that has cross bridges attached that bind to calcium
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What is a sarcomere?
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smallest functional unit of a muscle cell (does the moving which will make the muscle move)
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What are the functions of a sarcomere?
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sarcomere extends from one z-line to the next
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What does the sarcoplasmic reticulum store?
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calicum ions
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