Across
- 4. The side of the heart which receives oxygenated blood from the lungs
- 5. Deoxygenated blood from the body first enters into the right __________ of the heart
- 10. The liquid component of blood, containing dissolved nutrients and wastes, which makes up about 55% of blood volume.
- 11. Blood vessel that carries oxygenated blood from the lungs back to the heart.
- 13. These protect us from bacteria and other germs which may enter the blood and make us sick.
- 15. At the capillaries of the alveoli, oxygen enters the blood, and _________ ________ diffuses into the lungs.
Down
- 1. These have strong elastic walls, and transport blood away from the heart.
- 2. The only artery in the body which carries deoxygenated blood.
- 3. The component of blood which help with blood clotting if you are injured.
- 6. These contain haemoglobin to carry oxygen, and have a flattened shape for increased surface area.
- 7. Type of blood vessesl that have thinner walls, and valves to prevent the backflow of blood
- 8. Tiny, thin-walled blood vessels which deliver oxygen to the cells.
- 9. The lower two chambers of the heart.
- 12. Muscular organ which pumps blood around the body.
- 14. Once reaching the cells of the body, _________ exits the blood. CO2 and cellular waste products are picked up.