File:Anatomy, physiology and hygiene (1890) (14577813848).jpg

Identifier: anatomyphysiolog00mayc (find matches)
Title: Anatomy, physiology and hygiene
Year: 1890 (1890s)
Authors: May, Charles Henry, 1861-1943
Subjects: Human anatomy Physiology Hygiene, Popular. (from old catalog)
Publisher: New York, W. Wood and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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wonderful action of the brain when it is pos-sible to remember things all our lives ! 352. The brain gives us reason, so that when we see a thingwe know what it means and whether it is important or not. Itgives us judgment which enables us to do the right thing iuorder to accomplish what we want. 353. Intelligence has its seat in the brain. This preventsus from being stupid ; it enables us to understand thiugs andallows us to express ourselves just as Ave wish, by language. Itenables us to see the difference between right and wrong, soas to avoid the latter. 354. Training of the Brain.—A great deal of our mem-ory and intelligence depends upon the way in which our brainis trained. If we use our brain a great deal, it will becomebetter than if we allow it to remain idle. Many things whichwe study at school are taught us for the purpose of trainingthe brain. We should remember that we cannot think of morethan one thing at a time. When you study your lessons, you THE NERVOUS SYSTEM. 169
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Fia. 79.—The Brain and Spinal Cord, with the Spinal Nerves Issuing from the Latter. 170 ANATOMY, PHYSIOLOGY, AND HYGIENE. should not think of play ; and when you play, you should en-joy yourself, and need not think of your studies. There is atime for play and a time for study. THE SPINAL CORD. 355. The spinal cord is the soft bar of nerve-tissue whichruns down from the brain through the canal of the backbone.It is about as thick as the thumb. Besides being protected bybone, it has, like the brain, a covering of three membranes.While the spinal cord is not as important a part of the nervoussystem as the brain is, it is still very important, especially thepart which runs through the neck. One often hears of peo-ple falling down stairs and breaking their necks ; what ismeant by this is that this upper part of the spinal cord isbroken and death occurs immediately. When murderers arehanged they die, because in hanging this upper part of thespinal cord is broken across. 356. If the spinal

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