Blood brings food and oxygen to your cells.
blood.
White blood cells
-White blood cells White blood cells are like policemen in bloodstream. They are constantly on patrol for infected cells. (Yes; they usually eat them -aka kill them.)
White blood cells
plasma.
About 2/3 of your body's water is located in your blood cells.
Deoxygenated blood, also referred to as oxygen-poor blood or venous blood. This blood is returning to the heart after delivering oxygen to the body's cells.
White
carbon dioxide
carbon dioxide
Blood has an important role in the body. As blood passes by cells, it deposits oxygen rich nutrients and carries away the cells waste.
Oxygen and other nutrients diffuse out of blood by osmosis, and blood takes up carbon dioxide and other waste products given off by cells.