Cells of the sinoatrial node are the primary pacemakers of the heart. In the absence of any input from the autonomic nervous system, how many action potentials do these cells generate every minute? - PhysiologyWeb

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Physiology Test Question

Cells of the sinoatrial node are the primary pacemakers of the heart. In the absence of any input from the autonomic nervous system, how many action potentials do these cells generate every minute?

	(A) None
	(B) 30 action potentials per minute
	(C) 70 action potentials per minute
	(D) 100 action potentials per minute
	(E) All of the above are possible

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Posted: Monday, December 29, 2014
Last updated: Monday, December 29, 2014