Please help in answering this question - more than one answer may be correct: Cardiac pacemaker cells gradually depolarize due to A) Increased K+ flowing into the cell B) Ca++ flowing into the cell C) Increased Na+ flowing into the cells D) carbonate being used to make calcium carbonate skeletons E) Cl- flowing out of the cell
Please help in answering this question - more than one answer may be correct:
Cardiac pacemaker cells gradually depolarize due to
A) Increased K+ flowing into the cell
B) Ca++ flowing into the cell
C) Increased Na+ flowing into the cells
D) carbonate being used to make calcium carbonate skeletons
E) Cl- flowing out of the cell
This question is related to the physiological mechanisms involved in cardiac pacemaker cells. Cardiac pacemaker cells are specialized cells located in the sinoatrial node of the heart, which generate spontaneous electrical activity that triggers the contraction of the heart muscle. The spontaneous electrical activity of pacemaker cells is generated by a process known as pacemaker potential, which gradually depolarizes the cells until an action potential is generated, leading to the contraction of the heart. This question asks about the mechanism responsible for the gradual depolarization of pacemaker cells.
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