Diseases of the stomach with special reference to treatment / by Charles D. Aaron.

  • Charles Dettie Aaron
Date:
1911
Catalogue details

Licence: Public Domain Mark

Credit: Diseases of the stomach with special reference to treatment / by Charles D. Aaron. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    extracted by means of glycerin. It is inactive in an alkaline medium. Fats in gastric digestion become liquefied by the heat of the body, and, being thus set free from their intimate admix- ture with other foodstuffs, are disseminated throughout the chyme by the movements of the stomach. In this way they are prepared for digestion by the pancreatic juice and bile in the intestine. Absorptive Power of the Stomach.—It is probable that the absorptive power of the stomach is limited to such sub- stances as salts, sugars, and dextrins that may have been formed from starch in salivary digestion. Absorption does not take place readily in the stomach; it is a distinctive feature of intestinal digestion. According to von ]\Iering, water when taken alone is practically not at all absorbed in the stomach, but as soon as introduced begins to pass into the intestine in a series of spurts, by the contraction of the walls of the stomach. Von Mering has also demon- strated that, while the stomach is capable of absorbing carbon dioxide, alcohol, sugar, dextrin, or peptones, in solution, it can absorb little or no water. On the other hand, when the foregoing substances, except water, are taken into the stomach, water is secreted b.y the gastric glands in propor- tion to the amount of the substances absorbed. INTESTINAL DIGESTION Pancreatic secretion is stimulated to its greatest activity by the presence of such acids as hydrochloric, phosphoric, citric, lactic, or acetic, which seem to be equally effective in this regard. Condiments have little or no effect upon it. It has been found impossible to stimulate pancreatic secre- tion by way of the rectum; the one efficient stimulus is contingent upon the outpouring of acid chyme into the duodenum. Pancreatic secretion is increased by tlie pres- ence of fat, which also causes an increase in the lipogenic ferment. Water is also a stimulant to pancreatic secretion.