PPT-12-3 Cardiac Cycle Jocelyn

Sassano amp Sarah Miller The Cardiac Cycle The period between the start of one heartbeat and the start of the nest is a single cardiac cycle Can be divided into two phases During contraction or systole the chamber squeezes blood into adjacent chamber. Learning Outcomes. During diastole blood returning to the atria flows into the ventricles. Atrial systole transfers the remainder of the blood through the atrioventricular (AV) valves to the ventricles. Ventricular systole closes the AV valves and pumps the blood out through the semi lunar (SL) valves to the aorta and pulmonary artery. In diastole the higher pressure in the arteries closes the SL valves. The opening and closing of the AV and SL valves are responsible for the heart sounds heard with a stethoscope. . Denition :Anr-cycleisdenotedby(i1i2:::ir):Example :11=(1)1cycle1212=(1)1cycle1221=(12)2cycle123321=(13)2cycle123231=(123)3cycle12344312=(1423)4cycle1234535421=(13425)5cycle12345 Refers to the events of 1 complete heart beat . Both atria & ventricles contract then relax (0.8 sec if beating 75x/min). Key terms to know. Diastole. - relaxation. Systole. - contraction. Lub-dub. Circuits of the Blood. There are 3 circuits:. Systemic Circulation. From the left ventricle to the aorta and on to the body. Back to the heart via the superior and inferior vena cava to the right atrium. eminar. Education section. Jocelyn Pomales . 1. CONTACT INFORMATION. Jocelyn Pomales, Education Coordinator, Supervisor. jocelyn.pomales@myfloridalicense.com. Janice Taylor, Government Analyst I. janice.taylor@myfloridalicense.com. Heart Wall. Three layers. Epicardium. Outside layer. AKA visceral pericardium. Pericardium. Visceral pericardium or epicardium. Next to heart. Actually part of heart wall. Parietal pericardium. Outside layer. Lab 2 Activities. Anatomy of the internal conduction pathway of the heart. . Biopac Exercise L05-ECG-1: .  . Normal electrocardiogram (including the names of all waves, intervals, and segments, what they mean, and how they correlate to the parts of the cardiac cycle). . *. Systole = . *. Diastole = . *. BP = . 1. 2a. 2b. 3. Atrioventricular valves. Aortic and pulmonary valves. Open. Open. Closed. Closed. Closed. Open. Phase. Left atrium. Right. atrium. Left. ventricle. . Systole = . Diastole = . BP = . 1. 2a. 2b. 3. Atrioventricular valves. Aortic and pulmonary valves. Open. Open. Closed. Closed. Closed. Open. Phase. Left atrium. Right. atrium. Left. ventricle. Right. Learning Objectives. Explain how the heart works in relation to the conduction system . Explain the cardiac cycle. Explain how the two systems are linked . How does the heart contract.......?. Heart is composed of cardiac muscle. Understandings. U.D.4.1: structure of cardiac muscle cells allows propagation of stimuli through the heart wall. . U.D.4.2: signals from the sinoatrial node that cause contraction cannot pass directly from atria to ventricles.. Diastole. DHO 7.8, . pg. . 185. The R & L side of the heart work together. The heart is 2 pumps.. Systole. =period of ventricular . contraction. Diastole. =period of ventricular rest (when ventricles aren’t contracting). Here are some cardiac problem signs including chest discomfort, nausea, throat or jaw pain and more which you should never ignore. A PRESENTATION COMPLIED BY : . ATUMA CHUKWUBUEZE LUCKY 17/MHS05/006. MAHMUD HADIZA . 17/MHS01/181. COURSE: PHS 306:. LECTUREER: DR EDEBOR. CARDIAC CYCLE. Cardiac cycle is the series of event that takes place within one heart beat..