The inferior and superior vena cava bring oxygen-poor blood from the body into the right atrium. The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream. The pulmonary veins bring oxygen-rich blood to the left atrium.
1. The pulmonary veins carry oxygen-rich blood from the lungs to the left side of the heart so it can be pumped to the body. 2. The superior and inferior vena cavae are large veins that carry oxygen-poor blood from the body back to the heart.Feb 10, 2016
There are various kinds of blood vessels:Arteries.Elastic arteries.Distributing arteries.Arterioles.Capillaries (the smallest blood vessels)Venules.Veins. Large collecting vessels, such as the subclavian vein, the jugular vein, the renal vein and the iliac vein.