Superior Vena Cava
The major vein that leads into the right atrium is the vena cava. The superior vena cava carries deoxygenated blood from the upper part of the body into the right atrium. The inferior vena cava carries deoxygenated blood from the lower part of the body into the right atrium.
vena cava
The two upper chambers are called the atria. A single atria is an atrium.
the upper chambers of the heart are called the atria. (or atrium singular)
The right atrium and left atrium (plural atria) are the upper chambers of the heart. They are superior to the right and left ventricles, respectively.
The right atrium is the upper chamber of the right side of the heart. It is located superior to the left ventricle.
The superior vena cava supplies the deoxygenated blood from the upper half of the body into the right atrium
Right atrium: The right upper chamber of the heart. The right atrium receives deoxygenated blood from the body through the vena cava and pumps it into the right ventricle which then sends it to the lungs to be oxygenated.
The interatrial septum separates the left atrium from the right atrium (the atria are the upper chambers of the heart).
Blood from the upper part of the body enters the right atrium through two major veins: the superior vena cava and the coronary sinus. The superior vena cava collects deoxygenated blood from the head, neck, arms, and upper torso, while the coronary sinus drains blood from the heart muscle itself. Once in the right atrium, this blood is then directed into the right ventricle, where it will be pumped to the lungs for oxygenation.
The left and right atrium (or atria).
The upper chamber on the right side of the heart.