The heart is divided into four compartments. The two upper portions where blood enters the heart from the body and lungs are the atria. Deoxygenated blood enters the right atrium, and oxygenated blood from the lungs enter the left 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.
Right Atrium
The left and right atrium.
Two veins return deoxygenated blood to the right atrium. The superior vena cava returns blood from the head and upper body to the right atrium. The inferior vena cava returns blood from the legs and lower body to the right atrium.
The heart has two upper chambers. One of which being the right atrium which pumps deoxygenated blood to the right ventricle, and the other being the left atrium which pumps oxygenated blood to the left ventricle.
The two upper chambers in your heart are called the atria. One on its own is an atrium. This comes from the Latin word for an open entrance area in a house, because the atria are where the blood enters the heart after returning from either the body or the lungs.The right atrium receives blood from the body, and pumps it through the tricuspid valve into the right ventricle. The left atrium receives blood from the lungs via the pulmonary veins, and pumps it through the bicuspid valve into the left atrium.The atria have thinner walls than the ventricles, since they have to pump the blood a shorter distance than the ventricles.
You have left and right atrium. Right atrium gets blood from whole body and pump it into right ventricle. The left atrium gets blood from lungs and pumps the same into left ventricle. You have valves to help in this function.
blood used by the body enters the right atrium
The two upper chambers are called the atria. A single atria is an atrium.
The four chambers of the heartLeft atriumRight atriumLeft ventricleRight ventricleSee related link below for a diagram.Left Atrium -- upper -- receives blood from the pulmonary veinsRight Atrium -- upper -- receives blood from the venae cavae and ry sinusLeft Ventricle -- lower -- receives arterial blood from the left atrium and pumps it to the aortaRight Ventricle -- lower -- receives venous blood from the right atrium and pumps it to the pulmonary trunk for oxygenation.
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.