Dr. Faiza, an Assistant Professor of Physiology, elucidates the intricacies of the cardiac cycle, providing a comprehensive understanding of the rhythmic events that drive each heartbeat. Through a detailed exploration spanning seven distinct phases, learners are guided through the dynamic changes in ventricular pressure and volume, synchronized with electrocardiogram (ECG) patterns and heart sounds. The lecture commences with an overview of the cardiac cycle, emphasizing its duration and the influence of heart rate variations on its temporal dynamics. Dr. Faiza navigates learners through the intricacies of each phase, from atrial systole to diastasis, elucidating the physiological significance of atrial and ventricular events in the context of cardiac function. Furthermore, learners are tasked with tabulating pressure and volume changes in the left and right ventricles across the cardiac cycle, fostering active engagement and conceptual reinforcement. Dr. Faiza delves into the mechanisms underlying isovolumic contraction and relaxation, highlighting the pivotal role of valvular dynamics in regulating ventricular filling and ejection. Moreover, learners gain insights into the hemodynamic determinants of stroke volume and ejection fraction, unraveling the subtle distinctions between these crucial parameters in assessing cardiac performance. The lecture culminates with a discussion on the etiology of incisura in the aortic pressure curve, offering a nuanced understanding of vascular physiology within the context of the cardiac cycle. By elucidating the intricate interplay between cardiac events and hemodynamic parameters, Dr. Faiza equips learners with the knowledge and analytical skills necessary to comprehend the complexities of cardiac physiology and its clinical implications.