What Is the Function of the Sodium- Calcium Exchanger in Cardiac

question 36

Multiple Choice

What is the function of the sodium- calcium exchanger in cardiac muscle?

• A)depolarize the cell
• B)remove calcium from the cytosol by transporting it to the extracellular fluid thereby relaxing the muscle
• C)trigger the release of calcium from the sarcoplasmic reticulum
• D)interact with troponin to initiate cross- bridge cycling
• E)remove calcium from the cytosol by transporting it into the sarcoplasmic reticulum

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