What Causes Depolarization of a Cardiac Muscle Cell to Occur

question 27

Multiple Choice

What causes depolarization of a cardiac muscle cell to occur?

• A) Decrease in the permeability of the cell membrane to potassium
• B) Rapid movement of sodium into the cell
• C) Decrease in the movement of sodium out of the cell
• D) Rapid movement of calcium out of the cell

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