Body Systems

1234567891011121314151617
Across
  1. 3. mechanical breakdown of food in the mouth
  2. 6. air sacs in the lungs
  3. 9. the movement of particles from high concentration to low
  4. 11. small receiving chambers of the heart
  5. 13. sinoatrial node
  6. 15. breaks down carbohydrates in the mouth
  7. 16. a hormone that increases heart rate
  8. 17. stomach fluid that breaks down proteins
Down
  1. 1. contractions of the gut
  2. 2. large pumping chambers of the heart
  3. 4. very thin walled blood vessels
  4. 5. the breakdown of food in the alimentary canal
  5. 7. upper food tube
  6. 8. the large intestine
  7. 10. wind pipe
  8. 12. voice box
  9. 14. of the heart