392 THE HUMAN MACHINE 



(6) and connect with the central system. The sensory nerves 



receive (7) while the outgoing nerves send messages to the 



(8) which result in (9) Hence they are called (10) 



nerves. In addition the ordinary automatic activities of the body 



such as (11) , the beating of the heart, or the (12) of the 



intestines, are governed by the (13) nervous system. Certain 



glands called (14) also help control bodily activities. An 



example is the (15) gland, the secretions of which " pep " 



up the body. 



STORY TEST 



JANE WRITES ON How TO CONTROL THE NERVOUS SYSTEM 

 Read carefully and critically. List all errors and suggest corrections. 



Each one of us has a pretty big job on his hands in learning how 

 to control the human machine. Most of our daily acts are habit. 

 So first he needs to learn to do things right and then make all 

 of his thinking habits. He should aim high always. He should 

 try not to be careless for that is habit also. Cheerfulness or 

 grouchiness is habitual. But people cannot be habitually cheerful 

 if they are in pain. Therefore, it is best to take something which 

 will deaden pain if we have to, for in this way we can keep cheerful. 



Like any machine, every so often the human body needs rest. 

 The nervous system gets its rest through sleep. Never take short 

 naps as this is wasted time. Long sleeping periods of from eleven 

 to twelve hours at junior high school age is what we need. 



PROBLEM VI. ALCOHOL, NARCOTICS, AND THE 

 HUMAN MACHINE 



We Have Only One Human Machine. If you had a new 

 car, you would not deliberately run it over the worst roads 

 you could find, or allow dirt and dust to mar the fine finish. 

 If you lived near the seashore, you would not deliberately 

 run the car through a pool of salt water because you know 

 that salt water would cause the exposed parts to rust. 

 How much more important is the human machine and how 

 much more careful we should be of it, for while we may be 

 able to purchase a new car when the old one is worn out, 

 our own body mechanism has to last us as long as we 

 live. We should, therefore, try to use it as efficiently as 

 possible and protect it from damage when we know how. 



