Circulatory System

6. Helps maintain the direction of the blood and prevents backflow.
10. Blood that is rich in oxygen.
12. A type of blood vessel that transports blood at high pressure away from the heart to organs and tissues.
13. A type of circulation that carries blood to/from the lungs.
14. A type of circulatory system where the movement of fluid is completely confined to tubes.
15. Blood that is poor in oxygen.

1. A type of circulation system where blood passes once through the heart per circulation.
2. A type of blood vessel that allows the exchange of materials with tissues.
3. A type of circulation that carries blood to/from the organs and tissues.
4. A liquid tissue that is transported around the circulatory system, consisting of plasma and cells.
5. Lower chambers of the heart where blood exits.
6. A type of blood vessel that transport blood at low pressure towards the heart from tissues and organs.
7. The organ that pumps blood through the circulatory system.
8. The liquid part of the blood that contains water, ions, proteins, nutrients, waste and gases.
9. Upper chambers of the heart where blood enters.
11. A type of circulation system where blood passes twice through the heart per circulation.
16. A type of circulatory system where the movement of fluid is not wholly confined to tubes.