File:A healthy body. A textbook on anatomy, physiology, hygiene, alcohol, and narcotics. For use in intermediate grades in public and private schools (1889) (14763228705).jpg

Identifier: healthybodytextb00stow (find matches)
Title: A healthy body. A textbook on anatomy, physiology, hygiene, alcohol, and narcotics. For use in intermediate grades in public and private schools
Year: 1889 (1880s)
Authors: Stowell, Charles H(enry) 1850- (from old catalog)
Subjects: Human physiology
Publisher: Chicago, J.C. Buckbee and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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up the food into fine particlesand mix it with the saliva. They are very importantin another way : they add very much to the personalappearance of any one, especially when they are regularand wiiite. A set of filthy and decayed teeth is veryrepulsive. Care of the Teeth. We must not neglect our teeth inany way if we wish to preserve them and escape thepains of toothache. The teeth should not be picked witha pin or with any hard substance. Nuts should never 80 A HEALTHY BODY. be cracked between them ; they should be thoroughlycleaned at least once each day. It would be better toclean them after each meal and at bedtime. Use asmall, soft brush at least once each day, and as soon asa cavity appears, consult a dentist and have it filled; The Teeth vary in Shape. Our teeth are of variousshapes, because they have different kinds of work toperform. The front ones are sharp, for cutting, hencecalled incisors; while the back ones are large and un-even for grinding, and these are called molars.
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Fig. 21. The teeth of an adult. (1) a canine, or eye-tooth ; (2) an incisor,or cutting tooth ; (3) two molars, or grinding teeth, of the lower jaw; (4) twomolars, of the upper jaw. The Inside of a Tooth. By breaking open any tooth acavity will be found within it. (Fig. 22.) In the livingbody this cavity is filled with nerves and blood-vessels.Pig. 23 shows that each tooth has its own blood-vesseland nerve. It is when these are diseased that a toothgives us intense suffering. The Saliva. There is a constant flow of a liquid intothe mouth. It is called the saliva. While the jaws DIGESTION. 81 move and the teeth are doing their work, the fiow isgreatly inereased. The saliva comes from some glandsnear the tongue,and also from twolarge glands, onejust in front ofeach ear. Inhealth we are notconscious of theirwhereabouts; butwhen they becomeinflamed we knowall about it. Themumps are an in-flammation of thelarge glands.

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