Physiology 1020 Lecture Notes - Lecture 8: Pulmonary Valve, Tricuspid Valve, Aortic Valve

• School: Western University
• Department: Physiology
• Course: Physiology 1020
• Professor: Christine Bell

Document Summary

Describe the different types of myocardial cells and explain their functions. State the four main functions of the cardiovascular system. Explain the origin of self-excitability and give two characteristics of the sinoatrial node which lead to self-excitability. Describe the sequence of events leading to an action potential in the sinoatrial node. Draw and label a cut-away of the heart showing the electrical conducting system. Explain what an electrocardiogram (ecg) is and what each peak represents. Explain what an ecg can tell you about the health of the heart. Describe in detail the cardiac cycle and the changes in ventricular and aortic pressure and volume during one complete cycle and be able to relate these changes to activity in the valves and ecg events. Explain how to calculate cardiac output and all of the factors that control it. Describe in detail all of the factors that control heart rate. Describe in detail all of the factors that control stroke volume.