_____ is the ability of cardiac pacemaker cells to spontaneously initiate an electrical impulse without being stimulated from another source, such as a nerve.
A) Excitability
B) Conductivity
C) Automaticity
D) Contractility

Question

Quizplus · Accepted Answer

The ability of cardiac pacemaker cells to create an electrical impulse without being stimulated from another source is called automaticity. Excitability is the heart muscles' ability to respond to impulse or stimulus. Conductivity is the ability of the cardiac cells to receive and transmit an electrical impulse. Contractility is the contraction of the heart muscle which produces the heartbeat.

_____ Is the Ability of Cardiac Pacemaker Cells to Spontaneously