Yes it is a Blood Vessel
The vena cava carries deoxygenated blood into the left atrium.
The Pulmonary Vein carries oxygenated blood from the lungs to the Left Atrium.
Pulmonary Vein
pulmonary veins
Blood that comes in to the right atrium comes from the pulmonary vein.
vena cava
The left ventricle.
The blood enters through the superior and inferior vena cava.
well you have two atria the right atrium and left atrium but i think the right atrium has deoxygenated blood and the left atrium has oxygenated blood.
The superior vena cava conducts blood from the head to the right atrium.
the left atrium...it pumps blood thereThe pulmonary vein carries oxygenated blood from the lungs to the left atrium of the heart.
Lowest carbon dioxide content would be the vessel right after the lungs, pulmonary vein to the left atrium.