The ability of certain specialized cells of the heart to depolarize spontaneously is known as which of the following?
a. Diastasis c. Automaticity
b. Excitability d. Conductivity
ANS: C
Automaticity describes the ability of certain specialized cells of the heart to depolarize. Diastasis refers to the long period of reduced ventricular filling that follows the rapid-filling period. Excit-ability is defined as the ability of a cell to respond to an electrical stimulus. Conductivity is de-fined as the ability of cardiac tissue to propagate an action potential.
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