Multiple Choice
What is the function of the sodium -calcium exchanger in cardiac muscle?
A) trigger the release of calcium from the sarcoplasmic reticulum
B) depolarize the cell
C) remove calcium from the cytosol by transporting it to the extracellular fluid thereby relaxing the muscle
D) interact with troponin to initiate cross -bridge cycling
E) remove calcium from the cytosol by transporting it into the sarcoplasmic reticulum
Correct Answer:

Verified
Correct Answer:
Verified
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