Option H5: The transport system

H.5.1 Explain the events of the cardiac cycle, including atrial and ventricular systole and diastole and heart sounds

H.5.2 Analyse data showing pressure and volume changes in the left atrium, left ventricle and the aorta, during cardiac cycle.

H.5.3 Outline the mechanisms that control the heartbeat, including the roles of the SA (sinoatrial) node, AV (atrioventricular) node and conducting fibres in the ventricular walls

H.5.4 Outline atherosclerosis and the causes of cononary thrombosis

H.5.5 Discuss factors that affect the incidence of cononary heart disease