What is the PRIMARY mechanism by which the Na+-Ca2+ exchanger functions in cardiac muscle cells?
ANa+-Ca2+ exchanger requires ATP directly
BNa+-Ca2+ exchanger acts to remove Ca2+ from heart muscle cells
CThe Na+-Ca2+ exchanger operates in reverse mode during normal cardiac contraction
DThe Na+-Ca2+ exchanger primarily moves Ca2+ into cardiac muscle cells during systole
Equilibrium potential of calcium is
A+130mV
B-32mV
C+65mV
D-95mV
Calcium does not bind to
ATroponin
BCalmodulin
CTropomyosin
DNone of the options
+ 7 more in the PDF
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