The Circulatory System is the system of organs in the human beings and other animals which is responsible for transport of materials inside the body. It consists of heart, arteries, veins, capillaries ...

Biologists often show oxygenated blood as red, and deoxygenated blood as blue. This is just a way of illustrating it in biological diagrams. It's also helpful in showing the different regions of the ...

New research from Harvard University, an unspecified factor in the blood of young mice can reverse signs of aging in the circulatory system of older ones. It’s not yet clear how these changes affect ...