Q4 7th Revision Part 1

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Across
  1. 3. Which part of the blood kills harmful organisms in our body?
  2. 5. Where does the oxygen and carbon dioxide exchange take place in the respiratory system?
  3. 6. Which part of the blood helps in clotting of blood?
  4. 9. Which part of your body stops food from entering your windpipe?
  5. 11. It is the job of the__________ to pump the blood throughout the body.
  6. 12. What is the yellow liquid part of the blood called?
  7. 15. Which blood vessel had the thickest walls?
  8. 16. What are the two lower chambers of the heart called?
  9. 17. __________ is also called voice box.
  10. 18. What are air chambers inside the upper head connected to the main nasal cavity that help to warm up and moisten the air?
Down
  1. 1. Our heart beats about _____ times every minute.
  2. 2. Our _________is a measure of your heartbeat.
  3. 4. the smallest blood vessels.
  4. 7. What are the two upper chambers of the heart called?
  5. 8. The muscle that helps in inhaling and exhaling and located just below the lungs ?
  6. 10. How many chambers are there in heart?
  7. 13. Which part of the blood carries oxygen and carbon dioxide throughout the body?
  8. 14. Which blood vessel has valves?