6S OUR BODIES AND HOW WE LIVE 



QUESTIONS ON THE TEXT 



I. What is the source of the active powers of the body? 2. In 

 general, how are these active powers manifested? 3. How are 

 the bodily movements produced? 4. What is muscle? Illustrate. 

 5. Give a few illustrations of the work of muscles. 6. Upon what is 

 all motion in our bodies dependent? 7. Name the two great kinds 

 of muscles. 8. How do these two kinds of muscles differ from each 

 other? 9. What is the general build of the voluntary muscles? 

 10. How does voluntary muscle look under the microscope ? 



II. Describe the involuntary muscles and the appearance of their 

 tissues under the microscope. 12. What is meant by muscular contrac- 

 tion? 13. What is the object of contraction? 14. What is meant 

 by muscular coordination ? 15. What are tendons ? Illustrate. 16. In 

 a general way, how are muscles named ? 17. What muscles of the 

 head can you mention ? of the shoulder and the chest ? of the back and 

 the legs? 18. Why do we need physical exercise? 19. In general, 

 what is the effect of exercise on the muscles? Illustrate. 20. What 

 is the effect of exercise on various important organs ? 



21. What can you say about the amount of physical exercise needed ? 

 22. What is the best time for exercise? 23. Upon what does the 

 kind of exercise depend? 24. What can you say about walking as 

 an exercise? about the more vigorous exercises? 25. What is the 

 object of* gymnastic exercises ? 26. What good results may be due 

 to such exercises ? 27. Why do we need physical exercises in school ? 



28. What are some of the beneficial results of such exercises? 



29. What is the general effect of alcohol on the muscles ? 30. What 

 is the effect of alcoholic liquor upon speech ? 



31. Describe the effect of alcohol upon muscular strength. 32. What 

 is the effect of taking alcohol repeatedly ? 33. Explain the effect of 

 alcohol upon the structure of muscular tissue. 34. What is the effect 

 of tobacco on the muscles? 35. Tell what you can of the effect of 

 alcohol upon the operations of armies. 36. Explain and illustrate the 

 effect of alcohol and tobacco on physical development 



