Digestive and Respiratory System Crossword

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Across
  1. 3. To bring food that has been swallowed back to and out of the mouth
  2. 4. Organic compounds that includes sugars and starches mainly
  3. 7. From each bronchia air passes through smaller conduits called_________
  4. 8. It is a tissue that covers the larynx opening and prevents food particles from entering the respiratory tubes ______________
  5. 9. Food is conveyed to the stomach from here by peristaltic movements
  6. 12. Nutrients absorption is performed in here
  7. 14. Organic substances, fat and wáter soluble. Controls various reactions in our bodies
Down
  1. 1. Air travels inside blood cells, called red cells or _________
  2. 2. Thin filaments that filters and clean impurities that enter in the respiratory tubes
  3. 4. It prevents nostrils, pharynx, trachea and bronchus from closing
  4. 5. Oxygen is mixed with haemoglobin to travel in the blood, this mixture is called__________
  5. 6. Substances in the blood steam that regulate organs and systems____
  6. 10. Produce most of the digestive substances
  7. 11. Tiny sacks at the end of the bronchioles they are surrounded by capillaries _____________
  8. 13. Air is introduced by nostrils to the ________________ where it is heated and moistured