FREE BOOKS

Author's List




PREV.   NEXT  
|<   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40  
41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   56   57   58   59   60   61   62   63   64   65   >>   >|  
hief result of correct note-taking. As you develop in this particular ability, you will find corresponding improvement in your ability to comprehend and assimilate ideas, to retain and reproduce facts, and to reason with thoroughness and independence. READINGS AND EXERCISES Readings: Adams (1) Chapter VIII. Dearborn (2) Chapter II. Kerfoot (10) Seward (17) Exercise 1. Contrast the taking of notes from reading and from lectures. Exercise 2. Make an outline of this chapter. Exercise 3. Make an outline of some lecture. CHAPTER III BRAIN ACTION DURING STUDY Though most people understand more or less vaguely that the brain acts in some way during study, exact knowledge of the nature of this action is not general. As you will be greatly assisted in understanding mental processes by such knowledge, we shall briefly examine the brain and its connections. It will be manifestly impossible to inquire into its nature very minutely, but by means of a description you will be able to secure some conception of it and thus will be able better to control the mental processes which it underlies. To the naked eye the brain is a large jelly-like mass enclosed in a bony covering, about one-fourth of an inch thick, called the skull. Inside the skull it is protected by a thick membrane. At its base emerges the spinal cord, a long strand of nerve fibers extending down the spine. For most of its length, the cord is about as large around as your little finger, but it tapers at the lower end. From it at right angles throughout its length branch out thirty-one pairs of fibrous nerves which radiate to all parts of the body. The brain and spinal cord, with all its ramifications, are known as the nervous system. You see now that, though we started with the statement that the mind is intimately connected with the brain, we must now enlarge our statement and say it is connected with the entire nervous system. It is therefore to the nervous system that we must turn our attention. Although to the naked eye the nervous system is apparently made up of a number of different kinds of material, still we see, when we turn our microscopes upon it, that its parts are structurally the same. Reduced to lowest terms, the nervous system is found to be composed of minute units of structure called nerve-cells or neurones. Each of these looks like a string frayed out at both ends, with a bulge somewhere along its length. The ner
PREV.   NEXT  
|<   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40  
41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   56   57   58   59   60   61   62   63   64   65   >>   >|  



Top keywords:
system
 
nervous
 
Exercise
 
length
 

spinal

 

connected

 

knowledge

 

called

 

processes

 

mental


nature

 

statement

 

taking

 

Chapter

 

ability

 

outline

 

neurones

 
tapers
 
finger
 

structure


minute

 

angles

 
string
 

fibers

 

strand

 

frayed

 
branch
 

extending

 

started

 
number

apparently

 
emerges
 

attention

 

entire

 
enlarge
 

Although

 

intimately

 

material

 

nerves

 

radiate


lowest

 
fibrous
 
thirty
 

Reduced

 

ramifications

 

microscopes

 

structurally

 

composed

 

Contrast

 
reading