Word: mouths
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Dates: during 1880-1889
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...have seen that oxygen for the most part is taken in through the lungs, and the act which they perform taking it in is called respiration. At the back of the mouth are two passages leading downward, the one in front going to the lungs. The act of breathing requires that this trachea, as it is called, should be kept open all the time, so there are placed in its walls rings of cartilage which are incomplete in some part of their circumference. The epiglottis, fastened to the back part of the tongue keeps food from falling into the windpipe...
...that a word should be said concerning those students, happily not many in number, who make themselves conspicious at prayers by reaching for hat and books as soon as the hymn is ended, and starting down the aisle before the benediction is half out of the minister's mouth. These things are a gross discourtesy to the great majority who, no matter what they may think about the advisability of morning prayers as now carried on, still feel they owe it to themselves to behave respectfully; - to say nothing of those who join in the service for deeper reasons. Those...
...night we shall discuss digestion and in turn take up the various factors in this very important process." Saliva, the first factor, has a mechanical action, by penetrating all through the food in the mouth, it makes the work of grinding it up by the teeth much more easy. It is an alkaline fluid, and has the property of changing starch into sugar. Mr. Huxley's model man would eat 12 oz. of bread and 6 oz. of potatoes every twenty-four hours...
...proportion of vegetable and animal foods eaten carefully considered. When a portion of food, or drink, saliva, or any other substance has been carried back past a certain point on the posterior part of the tongue, it is completely out of our power to resist swallowing. After leaving the mouth the food passes through the oesophagus to the stomach, which is a hollow muscular organ, and provided with a number of glands which produce the gastric juice. The muscles of the stomach are described as consisting of three layers. At the lower opening is a muscle called the sphincter, which...
Saliva, the first modifying agent which affects the food, is secreted by three sets of glands in the mouth, in variously estimated amounts of from seven to seventy ounces. This liquid is thoroughly mixed with the food by the process of mastication. The secretion of saliva is increased by tobacco, diminished by alcohol, and by violent excise and fear. The saying, "his tongue clove to the roof of his mouth from fear," is a physiological fact...