[BIOC33H3] - Midterm Exam Guide - Everything you need to know! (13 pages long)
Document Summary
5. regulation of cardiac output: amount of blood the heart puts out per unit time b. regulation of blood flow, heart failure and blood pressure cardiac output. 1. function of heart rate and stroke volume: heart rate a. i. how fast the heart is beating b. stroke volume b. i. volume of blood pumped per beat. 3. terminology note there is no distinction between oxygenated and deoxygenated blood in definition of artery and veins: artery a. i. carries blood away from heart, vein b. i. carries blood towards the heart conduction system of the heart. 1. sinoatrial (sa) node: where electrical activity that causes heart to polarize and contract is generated. 2. internodal pathways: pathways which electrical activity spreads throughout in the atria, waves of depolarization cause the heart to contract as it spreads through the atria to ventricle via the atrioventricular (av) node. 1. cells within the heart are electrically coupled via gap junctions: allows for faster electrical transmission.
