296 RESPIRATION AND EXCRETION 



Questions 



1. What lines the respiratory tract? Its function? 



2. Of what use is oxygen in the body ? 



3. How do the air tubes end ? Of what use are the air cells ? 



4. How may artificial breathing be produced? 



5. Name some common diseases of the respiratory system. 



6. What are adenoids? What results from them? 



7. What are the signs of their presence ? 



8. How does tobacco affect the respiratory system? 



9. How does alcohol affect the respiratory system ? 



10. How revive any one from drowning ? 



11. What does a cell gain from oxidizing food? 



12. In what two ways is the chest enlarged? 



13. Why are deep breathing exercises valuable ? 



14. Give some habits that impair the power of the lungs. 



Special Topics 



1. Consumption and its prevention. 



2. Bronchitis and its prevention. 



3. Pneumonia and its prevention. 



4. The effect of tight lacing on the respiratory organs. 



5. The movements of the ribs and diaphragm in breathing. 



6. Cell respiration. 



References 



Hunter, Essentials of Biology. Chap. XXVII. 

 Hunter, Elements of Biology. Chap. XXXIII. 



PROBLEM LII 



A study of the products of respiration. 

 Materials. Limewater, test tubes, piece of cold metal or 

 cold windowpane, thermometer, small candle, splint. 



a. General Tests 



Method a. Breathe on a cold piece of metal or glass. 

 What takes place? Conclusion? 



