Medical Fellow Rishi Desai explains “heart depolariztion,” the flow of positive charge through the heart that happens every time your heart beats!

Membrane Potentials - Part 1

Membrane Potentials - Part 2

Permeability and Membrane Potentials

Action Potentials in Pacemaker Cells

Action Potentials in Cardiac Myocytes

Electrical System of the Heart

Depolarization Waves Flowing through the Heart