1. Notes on the Cardiovascular System
... into left ventricle Left ventricle full it contracts forcing left AV valve shut and blood through aortic semilunar valve to ascending aorta, on way throughout body Chambers of heart fill during diastole or the relaxation phase and eject blood during systole or contraction phase DeO2 blood comes into right atrium through AV or tricuspid valve then right ventricle, then pulmonary valve ... and pulmonary circulation Chamber walls have cardiac muscle called myocardium Their internal lining has smooth delicate membrane called endocardium Epicardium is a double layered membrane enclosing the ...
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