There are three types of blood vessels: arteries, veins and capillaries.
- Arteries are large blood vessels that carry blood from your heart to the rest of your body. This blood is rich in oxygen and nutrients. As arteries get farther away from the heart they begin to branch and become smaller and smaller. The smallest branches are called capillaries.
- Capillaries: this is where the oxygen of your blood is transferred to your tissues. In exchange, the wastes from your cells are transferred to the blood, including the carbon dioxide. Just beyond this area the capillaries begin to merge together and eventually form larger vessels called veins.
- Veins lead back to the heart. As the vessels carry deoxygenated blood back to the heart, waste products are routed to other organs where they are removed.
No comments:
Post a Comment