Question

Match these items.
1. where chemicals pass between cells and blood carbon dioxide
2. an atmospheric gas expelled by body cells capillaries
3. a vessel that carries blood away from the heart white blood cells
4. the liquid that carries chemicals and blood cells through the circulatory system cells
5. air sacs within the lungs plasma
6. a lower part of the heart blood vessels
7. any of the arteries, veins or capillaries that carry blood through the body serum
8. vessels that carry blood back to the heart ventricle
9. an upper part of the heart atrium
10. need food and oxygen t