the left atrium receives oxygen rich blood via the pulmonary vein
Left atrium.
the left atrium
The left atrium is the chamber that receives oxygenated blood returning from the lungs.
the heart itself
In the pulmonary circulation, deoxygenated blood leaves the right section of the heart through the pulmonary artery, enters the lungs and oxygenated blood comes through the pulmonary veins. The blood then moves to the left atrium of the heart.
Left atrium.
the left atrium
The left atrium is the chamber that receives oxygenated blood returning from the lungs.
Well yes and no. It is the first ventricle to receive oxygenated blood to pump out again, as the right ventricle does not receive oxygenated blood to pump. It is not the first chamber to reieve oxygenated blood, this is the left atrium which gather blood and pumps it into the left ventricle. However all the ventricles of the heart has a blood supply (like any other organ to brink nutrients and remove wastes) and all receive oxygenated blood from this supply at the same time.
the heart itself
The first organ to receive oxygen-rich blood would be the heart. The right ventricle pumps de-oxygenated blood to the lungs. The lungs provide oxygen via interaction with capillaries which in turn sends the oxygen-rich blood back to the left atrium which is found in the heart.
The left ventricle pumps oxygenated blood into the aorta, one of the first side branches of the aorta are the cardiac arteries that bring blood back to the heart. So no heart chamber supplies blood to the heart directly.
Right Atrium
The oxygenated blood first enters the capillaries, then they carry the blood through other veins to the rest of the body.
the right atrium through the superior and inferior vena cava
In the pulmonary circulation, deoxygenated blood leaves the right section of the heart through the pulmonary artery, enters the lungs and oxygenated blood comes through the pulmonary veins. The blood then moves to the left atrium of the heart.
The mitral valve between the left atrium and ventricle.