The Heart and Circulatory System

1234567891011121314
Across
  1. 3. Cell that helps defend the body against infection
  2. 6. Liquid tissue that transports oxygen, nutrients, and waste
  3. 10. Lower chamber of the heart that pumps blood out
  4. 11. The rhythmic throbbing felt as blood is pumped through arteries
  5. 12. Muscular organ that pumps blood around the body
  6. 13. Blood vessel that carries blood back to the heart and often contains valves
  7. 14. Upper chamber of the heart that receives blood
Down
  1. 1. Cell that carries oxygen using haemoglobin
  2. 2. Waste gas produced by cells and removed by the circulatory system
  3. 4. Gas carried by red blood cells that cells need for respiration
  4. 5. Small cell fragments that help blood to clot
  5. 7. Very small blood vessel where exchange of gases and nutrients occurs
  6. 8. Structure that prevents blood from flowing backwards
  7. 9. Blood vessel that carries blood away from the heart under high pressure
  8. 11. Liquid part of blood that carries cells and dissolved substances