RECOVER- BLS / Revised Questions and Answers / 2024

How soon after CPA does tissue damage begin? - 4 minutes What is the flow of blood through the heart? - oxygenated blood enters left atrium from the pulmonary veins, mitral valve, left ventricle, aortic valve, aorta, body, vena cavas carry deoxygenated blood back to the heart, right atrium, tricuspid valve, right ventricle, pulmonic valve, pulmonary artery, lungs What does the SA node do? - generate electrical impulse to stimulate contraction of the muscle cells- stimulate both atria to contract in sync What does the AV node do? - slows the conduction of the electrical activity to allow for filling What do the bundle of his do? - conduct the electrical impulse from the AV node to signical the bundle branches to start contracting What do the R and L bundle branches do? - Work with the purkinje fibers to conduct the impulse the the ventricular myocardial cells causing them to contract