Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of ...

The New York University School of Medicine and collaborators found that capillary-associated macrophages in skin decline with age, weakening microvascular repair and reducing perfusion in mice, with ...

Check your knowledge of the heart and how blood is transported around the body by blood vessels ahead of your Higher Human Biology exam. Brush up on your knowledge of arteries, capillaries, veins and ...

The cardiovascular system consists of the heart, blood vessels, and blood. Its primary function is to transport nutrients and oxygen-rich blood to all parts of the body and to carry deoxygenated blood ...