G5&6 Science Review Sheet

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Across
  1. 3. to send air out of your lungs; breathe out
  2. 4. connected with the heart
  3. 6. either of the two upper spaces in the heart
  4. 7. the two main branches of the trachea leading to the lungs
  5. 9. either of the two lower spaces in the heart that pump blood to the lungs
  6. 10. a structure in the heart or in a vein that lets blood flow in one direction only
  7. 11. a complicated system of tubes that cross each other and are connected to each other
  8. 13. the regular beating of the heart, especially when it is felt at the wrist or side of the neck
  9. 16. to be made or formed from several parts
  10. 17. the way a person or thing moves or points towards
  11. 18. the act of giving something and then something else is given back
  12. 20. to be filled with energy, power
  13. 22. the pale yellow liquid that forms 55% of human blood and contains the blood cells
  14. 24. any of the tubes through which blood flows through the body
  15. 25. materials that are no loner needed
Down
  1. 1. a very small cell in the blood that makes it thicker and more solid in order to stop bleeding caused by an injury
  2. 2. any of the smallest tubes in the body that connect the arteries and veins
  3. 5. one of the four spaces in the heart
  4. 8. the tubes that carry blood from the heart to other parts of the body
  5. 9. any of the tubes that carry blood from all parts of the body towards the heart
  6. 12. to produce a strong, regular beat
  7. 14. the area at the top of the throat that contains the vocal cords
  8. 15. needing careful treatment, especially because easily damaged
  9. 19. tiny thin walled, capillary rich sacs in the lungs where the exchange of oxygen and carbon dioxide take place
  10. 21. substances that flow and are not solid
  11. 23. an almost solid piece of something