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