The cells of the SA node are unable to maintain a stable resting membrane potential.They are particularly leaky to ions like sodium and potassium.What will this leakiness lead to?

Question

Quizplus · Accepted Answer

The leakiness of the SA node cells to ions like sodium and potassium will lead to the spontaneous formation of an action potential, as ions will move across the membrane in response to their concentration gradients, eventually reaching a threshold that triggers the opening of voltage-gated ion channels and the initiation of an action potential. This is what allows the SA node cells to act as the pacemaker of the heart, generating rhythmic impulses that coordinate the contraction of the heart muscle.

The Cells of the SA Node Are Unable to Maintain