Cardiac Physiology

Dive deep into the fascinating world of cardiac physiology! This comprehensive video covers everything from the action potentials in cardiac muscle and the SA node, to ECG interpretation, heart attacks, and the regulation of heart function. We'll break down each phase of the action potential, explaining the ion channels, currents, and membrane potentials involved. Learn how the P, QRS, and T waves of an ECG are generated, and understand the critical differences between NSTEMI and STEMI heart attacks. Explore the inotropic, lusitropic, and chronotropic effects of norepinephrine and acetylcholine, and discover the crucial role of calcium in cardiac muscle contraction. Finally, we'll walk through the cardiac cycle, detailing the events in the left ventricle and aorta, including pressure and volume changes, valve movements, and heart sounds. Perfect for students and anyone interested in understanding the intricacies of the heart!