Activity 9Version en ligne Functions and anatomy of the heart par Neil Blue 1 chambers of the heart 2 Atria/Atrium 3 ventricles 4 tricuspid valve 5 bicuspid valve 6 Pulmonary Valve 7 valves 8 Aorta 9 Vena Cava 4 left and right upper and lower The upper half of the heart is referred to as the first and 3 chambers of the heart the 2 and 4 chambers lower half of the heart is known as on the right side of the heart connects the 1st and 2nd chamber on the left side of the heart connects the 3rd and 4th chamber also known as mitral valve separates the right ventricles from the pulmonary trunk also known as Semilunar valve keeps blood flowing in one direction of the heart prevents blood from flowing backwards large artery that comes off top part of the heart where blood leaving the heart goes Has superior and inferior parts large vein that brings blood back in the heart