The polarity that exists across a cardiac cell membrane is maintained by an active transport process known as
A) automaticity.
B) fibrillation.
C) sodium-potassium ion pump.
D) pinocytosis.

Question

Quizplus · Accepted Answer

The sodium-potassium ion pump is responsible for the active transport of sodium and potassium ions across the cardiac cell membrane, which maintains the cell's resting membrane potential and ensures that the polarity is preserved. Choices A and B refer to abnormal cardiac rhythms, and pinocytosis is a type of endocytosis that is not relevant to maintaining the membrane potential.

The Polarity That Exists Across a Cardiac Cell Membrane Is