A drunken man can not walk straight because alcohol has hurt the little
brain; he can not think straight because it has poisoned the large brain.
* * * * *
[Illustration: THE BRAIN AND THE SPINAL CORD.]
C, the large brain (_cerebrum_). B, the small brain (_cerebellum_). S, a
portion of the spinal cord.
* * * * *
QUESTIONS ON THE NERVOUS SYSTEM.
Where is your brain?--"In my skull."
What color is the brain?--"Gray and white."
What does the brain resemble?--"Marrow."
How is the brain protected?--"By three coats or membranes."
What may you name these membranes?--"The outer membrane, the middle
membrane, and the inner membrane."
Describe the outer membrane. See Formula.
Describe the middle membrane. See Formula.
What are the nerves?--"White ashen-gray pulpy cords, which are found in the
brain."
Where do they go from the brain?--"To every part of the body."
How many kinds of nerves have you?--"Two."
What names are given to the two kinds of nerves?--"Nerves of motion and
nerves of feeling."
Which is the largest nerve in the body?--"The spinal cord."
Where is the spinal cord?--"It extends from the brain throughout the whole
length of the backbone.
Pages:
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72