Increases in the Amount of Cytoplasmic Calcium Required to Initiate

question 84

Multiple Choice

Increases in the amount of cytoplasmic calcium required to initiate a muscle contraction are mediated by the coupling between a _ on the T tubule and a on the membrane of the sarcoplasmic reticulum.

• A)ryanodine receptor : calcium pump
• B)calcium pump : ryanodine receptor
• C)calcium- induced calcium release channel : dihydropyridine receptor
• D)dihydropyridine receptor : ryanodine receptor
• E)dihydropyridine receptor : calcium pump

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