2/2 OUR BODIES AND HOW WE LIVE 



QUESTIONS ON THE TEXT 



I. What is meant by a stimulus? 2. What can be said about 

 general sensations? Illustrate. 3. From what do most sensations 

 result? Illustrate. 4. What are the special senses? 5. What are 

 the special sense organs ? 6. Describe the sense of touch. 7. What 

 can you say about sensations of heat and cold? 8. Describe in 

 full the sense of taste. 9. Where is the sense of smell located? 

 10. What general difference is there between the sense of hearing 

 and that of touch, taste, or smell? 



II. What is the organ of hearing, and what are its three general 

 parts ? 12. Describe the outer ear. 13. What is the tympanic mem- 

 brane? 14. Describe the middle ear. 15. Give some details about 

 the bones of the ear. 16. What is the Eustachian tube ? 17. What 

 is the inner ear? 18. Describe the three parts of the inner ear. 

 19. Describe the auditory nerve. 20. Explain in some detail how we 

 hear. 



21. Give some practical points about the care of the ears. 22. What 

 is the general effect of alcohol and tobacco upon hearing ? 23. What 

 may be said in a general way about the sense of sight? 24. What is 

 the eye, and where is the eyeball lodged? 25. Describe the coats of 

 the eye. 26. What is the retina ? 27. Describe the iris and the pupil. 

 28. What . is the crystalline lens ? 29. What are the two fluids, or 

 humors, of the eye? 30. Describe the work done by the crystalline 

 lens. 



31. Describe in some detail the mechanism of vision. 32. How is 

 the image formed on the retina? 33. Describe the muscles of the 

 eye, and explain their action. 34. Describe the eyelids, and explain 

 how they are kept moist. 35. What are the eyelashes and the eye- 

 brows ? 36. What are the tears, and of what does the tear apparatus 

 consist ? 37. What is color blindness ? 38. What is meant by near 

 sight? 39. Explain what is meant by long or far sight. 40. How 

 may the eyes be abused? 



41. What is the relation of proper light to good eyesight ? 42. Why 

 is rest of great importance to the eyes? 43. Give some practical 

 hints about taking care of the eyes. 44. What is the general effect 

 of alcohol on sight? 45. How may tobacco affect the sight? 



