Depolarization of a Cardiac Muscle Cell Occurs as the Result

question 22

Multiple Choice

Depolarization of a cardiac muscle cell occurs as the result of a:

• A) decrease in the permeability of the cell membrane to potassium.
• B) rapid movement of sodium into the cell.
• C) rapid movement of calcium into the cell.
• D) slow movement of sodium out of the cell.
• E) slow movement of calcium out of the cell.

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