PSIO 202 Lecture Notes - Lecture 1: Tissue Plasminogen Activator, Heart Valve, Cardiac Muscle

• School: University of Arizona
• Department: Physiology
• Course: PSIO 202
• Professor: Elizabeth Bailey, Hilary Lease,and Eric Price,

Document Summary

Three components of the cardiovascular system: the , , and . The : which acts as a pump to propel. : which moves through tubes called : which conduct blood throughout the body. circuit carries oxygen and nutrients to the cells of our body. circuit reloads blood with oxygen. Systemic circuit carries blood to body cells/tissues/organs. Pulmonary circuit carries blood to the lungs where it is reloaded with oxygen (and emptied of excess carbon dioxide) before returning to the heart. The valve separates the left ventricle chamber from the aorta. The valve separates the right ventricular chamber from the main pulmonary trunk. Cardiac centers of the medulla: fibers leaving from the cardio- acceleratory center are . Cardiac centers of the medulla: fibers leaving from the cardio- inhibitory center are . Cardio-acceleratory center: a collection of neurons that increase hr and contractility. Cardio- inhibitory center: collection of neurons that decrease heart rate. Vasomotor center: a collection of vasomotor neurons" that regulate.