You tell me that is why I'm asking
Well, between the right ventricle and the pulmonary arteries is an atrioventricular valve called the PULMONARY VALVE . Between the left ventricle and the aorta is an atrioventricular valve called the AORTIC VALVE
The partition between the sides of the heart is called the septum.
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The structure of the right atrium is to send blood through an atrioventricular valve to the right ventricle and it's structure is mostly muscle and tissue.
Blood passes the right atrioventricular valve, called the tricuspid valve, when it leave the right atrium. From there it flows into the right ventricle.
right atrioventricular valve
vena cava -> right atrium-> through the right atrioventricular valve -> right ventricle -> through the Plumonary semi-lunar valve -> Plumonary trunk -> out the pulmonary artery -> lungs -> pulmonary veins -> left artrium -> through the left atrioventricular valve -> left ventricle -> through the aortic valve -> aorta -CB
Blood passes through the right atrium to the right atrioventricular valve, or "AV valve" for short, into the right ventricle during pulmonary contraction.
pulmonary artery
right atrium --> tricuspid valve --> right ventricle --> pulmonary semilunar valve --> pulmonary arteries --> lungs --> pulmonary veins --> left atrium --> bicuspid valve --> left ventricle --> aortic semilunar valve --> aorta --> arteries and capillaries --> cells --> venules, veins, vena cava --> right atrium -->thoughtfulobserver
Pulmonary Artery
They are both found in the right side of the heart and deal with transferring deoxygenated blood to the lungs. The valves themselves include three flaps.