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vocabulary on heart

red blood cells carry o2 and co2. pick up o2 in lung-goes to body.takes co2 back to lungs where we breath it out.5,000,000 red blood cells in ONE drop of blood
white blood cells fight off germs/infection.
platelets form good clots. (to stop bleeding)
plasma liquid in blood (app.1/2 of blood is plasma) made in liver
arteries carry o2 AWAY from heart
capillaries tiny blood vessels (thinner than hair) connect arteries/veins
veins take blood back to heart
Created by: Clara101