Across
- 1. ... allow the exchange of water, oxygen, carbon dioxide, digested food, and waste products between blood and cells.
- 3. Our heart is made of a special muscle called the heart ...
- 6. The heart pumps ... to all parts of the body.
- 8. White blood cells help detect invading ...
- 9. As blood goes around our body, it picks up carbon dioxide and waste substances produced by our ...
- 11. Our ... rate increases when we are running.
- 14. Our blood carries oxygen, digested food, and ... to all parts of our body.
- 16. ... is when fatty substances may collect on the inner walls of our arteries and it stiffen.
- 20. When the white blood cells multiply abnormally, the person’s condition is ...
- 21. Blood is pumped to various parts of our body as a result of the ... of our heart muscle.
- 22. ... generally carry blood that is poor in oxygen.
Down
- 2. ... generally carry blood that is rich in oxygen.
- 4. Our heart, blood vessels and the blood that flows through them, together, form the ... system.
- 5. ... are tubes that carry blood to all parts of our body.
- 7. ... is also known as high blood pressure.
- 10. Age may affect our heart ...
- 12. Hypertension can lead to ...
- 13. ... is caused by a lack of iron in our diet or large amounts of blood loss.
- 15. Our circulatory system is made up of our heart, our blood, and the ... they contain.
- 17. The heart receives blood rich in ... from the lungs.
- 18. The heart pumps digested ... to all parts of the body.
- 19. There are three types of blood vessels in our body, they are capillaries, ... , and vein.