Explore the intricacies of the cardiac cycle in this comprehensive lecture on cardiology. Delve into the phases of systole and diastole, examining the events occurring in the left side of the heart. Learn about ventricular contraction, heart sounds, isovolumetric contraction and relaxation, and the various phases of ventricular ejection and filling. Understand the timing of systole and diastole, pressure changes in different chambers and vessels, and the graphical representation of the cardiac cycle. Gain insights into atrial contraction, progressive filling phases, and the correlation with ECG. Master the fundamental concepts of cardiovascular physiology through detailed explanations and visual aids.