352 Our Surroundings 



4. Why does breathing tend to become more difficult and more rapid 

 as one ascends a mountain? 



5. Why is exercise in fresh air more beneficial than exercise in an ordi- 

 nary closed room? 



6. Is the air you breathe on the street necessarily health-giving? 



7. If forced to pass through a smoke-filled room, would you breathe 

 deeply? Why? 



8. Describe the Schaefer method of artificial respiration. 



9. Does a crowded auditorium require less or more heat than an empty 

 one to maintain a warm temperature? Why? 



10. Under what conditions are automobiles dangerous to respiration? 



11. How may the presence of carbon dioxide in expired air be shown? 



12. State the effect of the use of alcoholic beverages on the lungs. 



13. State the nature, location and effects of adenoids. 



14. State the parts of the respiratory system that are most liable to each 

 of the following: tuberculosis, catarrh, pneumonia, diphtheria. 



15. How do you ventilate your room at night? 



16. Describe a good method of house ventilation. 



17. Why should one always breathe through the nose? 



18. Give two reasons why deep breathing under ordinary circumstances 

 is healthier than shallow breathing. Can you think of any particular 

 circumstance in which it would be wiser not to breathe deeply? 



19. Why do people stamp their feet, swing their arms and exercise in other 

 ways, when cold? 



20. Why are climbers forced to rest at frequent intervals when climbing 

 high mountains? 



21. Name in their proper order the parts of the continuous air passage 

 leading from the nose to the air sacs of the lungs. 



22. Why is the inhaling of tobacco smoke unhealthy? 



23. Carbon monoxide gas attacks the red corpuscles of the blood. How 

 would breathing this gas affect the body ? 



PROJECTS 



1. Examine the lungs of a frog or other animal in order to understand 

 better the structure of your lungs. 



2. Devise a simple experiment to show the necessity of oxygen to sus- 

 tain life. 



3. Prepare a set of rules for proper breathing. 



4. Investigate the Sylvester method of artificial respiration, and the use 

 of the pulmotor for the same purpose. .Write a report comparing the 

 Schaefer method with either of these. 



