Which of the Following Statements Is True Concerning the Depolarization

question 71

Multiple Choice

Which of the following statements is true concerning the depolarization of a cell in the SA node?

• A)The cell will not depolarize until it receives sympathetic stimulation
• B)The pacemaker potential is caused by calcium entering the cell via slow channels
• C)The pacemaker potential is slower in achieving threshold when acetylcholine is applied to the SA cells
• D)Both the pacemaker potential is caused by calcium entering the cell via slow channels and the pacemaker potential is slower in achieving threshold when acetylcholine is applied to the SA cells are correct
• E)None of the choices are true

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