They are: (1) Arteries - These are the blood vessels that carry blood away from the heart. They generally carry oxygenated blood except the pulmonary artery. (2) Veins - These are the blood vessels...
There's 4 types of blood. There's type O, type A, type B, and type AB. Type AB blood can receive blood from any donors and they're the universal recipients. Type O blood can donate to any other blood...