Unit 1

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Across
  1. 2. artery located on the wrist
  2. 3. exchange of oxygen
  3. 7. body's mechanism to maintain blood pressure at a constant level
  4. 11. supplies oxygen to cells and tissues
  5. 12. connects arteries and veins
  6. 13. tiny air sacs in the lungs
  7. 14. artery located in the bend of the elbow
  8. 17. high blood pressure
  9. 18. how much pressure your blood is exerting against your artery walls while the heart is resting between beats.
Down
  1. 1. process of breathing air out
  2. 4. process of taking air into the lungs
  3. 5. amount of pressure your blood is exerting against your artery walls when the heart beats
  4. 6. main function is to propel blood throughout the body
  5. 8. carry blood away from the heart
  6. 9. artery located on the neck
  7. 10. also known as the windpipe
  8. 15. carry blood back to the heart
  9. 16. tiny hair that filter out dust and other particles in the respiratory tract