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On Disorders of Digestion, Their Consequences and Treatment (Paperback) Loot Price: R418 Discovery Miles 4 180
On Disorders of Digestion, Their Consequences and Treatment (Paperback): Thomas Lauder Brunton
On Disorders of Digestion, Their Consequences and Treatment (Paperback): Thomas Lauder Brunton

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On Disorders of Digestion, Their Consequences and Treatment (Paperback)

Thomas Lauder Brunton

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Loot Price R418 Discovery Miles 4 180

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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: the movements of mastication tends to dissolve such parts of the food as are soluble in water, and to convert the insoluble parts into a pulp. At the same time, the diastatic ferment of human saliva begins to convert the starch of the food first into dextrin, and then into malt-sugar, or maltose. This conversion goes on very rapidly; and if one chews a piece of stale bread, even for a couple of minutes, a distinctly sweet taste will usually be perceived from the formation of sugar in the mouth. But the effects of mastication are not limited to the changes produced by it in the food within the buccal cavity; the taste of savoury meat, the rolling of a sweet morsel under the tongue, and the movements of mastication, exert an influence both on the stomach and on the brain. The effects on the stomach are shown by the observation of Richet, that, in a case of gastric fistula, where the oesophagus was completely occluded, mastication of food induced secretion of gastric juice, although nothing could pass from the mouth into the stomach on account of the obstruction in the gullet. The effects of mastication on the nerve-centres are perhaps still more important. For it is obvious that the secretion, both of saliva and gastric juice, takes place reflexly through the medium of the nerves; and if the nervous system be dull or depressed, the stimulus of food in the mouth is net likely to excite secretion to the same extent as when the nerve-centres are active. But provision seems to have been made for this; and the mere act of mastication not only supplies a stimulus to the peripheral ends of sensory nerves in the mouth, it leads to an increased supply of blood to the nerve-centres. This is well shown by some observations of Marey, who found that the current of blood in the caroti...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: Thomas Lauder Brunton
Dimensions: 246 x 189 x 9mm (L x W x T)
Format: Paperback - Trade
Pages: 158
ISBN-13: 978-0-217-73856-9
Barcode: 9780217738569
Categories: Books
LSN: 0-217-73856-7

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