Across
- 4. ... allow the exchange of water, oxygen, carbon dioxide, digested food, and waste products between blood and cells.
- 5. There are three types of blood vessels in our body, they are capillaries, ... , and vein.
- 7. When the white blood cells multiply abnormally, the person’s condition is ...
- 9. Blood is pumped to various parts of our body as a result of the contraction of our heart muscle.
- 11. The heart receives blood rich in ... from the lungs.
- 13. ... generally carry blood that is rich in oxygen.
Down
- 1. Age may affect our heart ...
- 2. Our ... rate increases when we are running.
- 3. ... is when fatty substances may collect on the inner walls of our arteries and it stiffen.
- 6. The heart pumps ... to all parts of the body.
- 8. ... generally carry blood that is poor in oxygen.
- 10. The heart pumps digested ... to all parts of the body.
- 12. Our heart, blood vessels and the blood that flows through them, together, form the ... system.