These lecture slides, by Dr Sidra Arshad, offer a comprehensive description of the events of a cardiac cycle. Learning objectives: 1. Describe a cardiac cycle 2. Explain the mechanical events of cardiac cycle with reference to volume and pressure changes 3. Correlate the mechanical events of cardiac cycle with the electrical events of the heart Study Resources: 1. Chapter 9, Guyton and Hall Textbook of Medical Physiology, 14th edition 2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition 3. Chapter 30, Ganong’s Review of Medical Physiology, 26th edition 4. Cardiac Cycle - StatPearls, https://www.ncbi.nlm.nih.gov/books/NBK459327/ 5. Chapter 14, Human Physiology An Integrated Approach, Dee Silverthorn, 8th ed