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.
Superior Vena Cava
vena cava
The vena cava.
It's a major vein leading to the right atrium of the heart
The pulmonary vein transports oxygenated blood from the lungs to the right atrium of the heart.
Depends on which atria you are asking about. Blood enters the right atrium from the vena cava and the left atrium from the pulmonary vein.
pulmonary vein
th blood vessel that goes to the right atrium is cava
capillaries of small intestine; superior mesenteric vein; hepatic portal vein; liver sinusoids; hepatic vein; inferior vena cava
pulmonary vein
pulmonary vein
right atrium -> right ventricle -> pulmonary artery -> pulmonary vein -> left atrium -> left ventricle -> aorta