Commercial Door Threshold - Width 4 in, Color/ Finish Mill Finish, Material Aluminum, Thickness 1/2 in, Length 145 in Average rating: out of 5 stars, based on reviews Write a review ratings q&a
Capillaries connect the arteries to veins. The arteries deliver the oxygen-rich blood to the capillaries, where the actual exchange of oxygen and carbon dioxide occurs. The capillaries then deliver the waste-rich blood to the veins for transport back to the lungs and heart. Veins carry the blood back to the heart.
Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation. (Usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood.) There are two unique arteries.The pulmonary artery carries blood from the heart to the lungs, where it receives oxygen.rteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation. (Usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood.) There are two unique arteries.