In pacemaker cells the movement of __________ into the cell through voltage-gated channels is primarily responsible for the depolarization phase of the action potential. A Ca2+ ions B K+ ions C Na+ ions D Cl- ions

In pacemaker cells the movement of __________ into the cell through voltage-gated channels is primarily responsible for the depolarization phase of the action potential. A Ca2+ ions B K+ ions C Na+ ions D Cl- ions

Biomedical Instrumentation Systems

1st Edition

ISBN:9781133478294

Author:Chatterjee

Publisher:Chatterjee

Chapter7: Instrumentation In Diagnostic Cardiology

Section: Chapter Questions

Problem 12P

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Question

In pacemaker cells the movement of __________ into the cell through voltage-gated channels is primarily responsible for the depolarization phase of the action potential.

	A	Ca2+ ions
	B	K+ ions
	C	Na+ ions
	D	Cl- ions

Expert Solution

introduction

The opening of channels that let positive ions flow into the cell can cause depolarization.

Flow of K⁺ is the outward current following depolarization of the membrane.

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