Unit 3: The Circulatory System - Mr Brad

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Across
  1. 6. The two chambers that receive blood at the top of the heart
  2. 7. The piece of tissue in the heart that stops blood from blowing back into a chamber and keep it flowing in the right direction
  3. 8. A b lood cell that carry oxygen from the lungs to the body cells
  4. 10. White blood cells make this protein to destroy viruses or bacteria
  5. 13. It helps to clot blood and stop bleeding
  6. 14. This describes blood with a little bit of oxygen in it
  7. 15. It receives deoxygenated blood from the body
  8. 16. To squeeze together to pump blood
  9. 17. A protein in red blood cells to carry oxygen
  10. 20. The second biggest type of blood vessel that careies blood to the heart
  11. 22. A Blood cell that helps fight disease
  12. 25. It pumps oxygenated blood to the body
  13. 27. One of the four places where blood flows in the heart
  14. 28. To rest
  15. 29. Your heart relaxes and contracts once to make this; like a heart beat
Down
  1. 1. This describes how oxygen gets from our lungs into our blood in our capillary
  2. 2. The largest artery that carries blood from the heart to other arteries
  3. 3. The liquid part of blood
  4. 4. Single-celled organism without a nucleus; they can be harmful
  5. 5. The smallest blood vessel; substances are exchanged here between the body cells & the blood vessel
  6. 9. Haemoglobin that has oxygen molecules attached to it
  7. 11. This describes blood with lots of oxygen in it
  8. 12. The two chambers that pump blood at the bottom of the heart
  9. 15. It pumps deoxygenated blood to the lungs
  10. 18. A protein that helps speed up a chemical reaction
  11. 19. Blood flows through them such as capillaries, arteries & veins
  12. 21. A group of cells that to the same job
  13. 23. It receives oxygenated blood from the lungs
  14. 24. Pieces of fat from fatty food that make your blood vessels narrow and can cause high blood pressure, heart disease & heart attacks
  15. 26. The biggest type of blood vessel that takes blood away from the heart