Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1834 Excerpt: ... the inner surface of the stomach; it is of a pale pink colour, and marbled appearance, crowded withvillosities which seem to constitute a downy and coloured tissue, continually covered with an abundant, viscid, inodorous fluid. When the stomach is empty this membrane, from the contraction of the muscular fibres, presents numerous wrinkles, which are termed the rugee of the stomach. This surface has a velvet-like appearance, and when injected and examined with a powerful lens, we find it formed of fine, short, prominent villi, which are crowded with an infinity of small vessels, whose office is to furnish that particular fluid, called the gastric juice, which is the principal agent of digestion. There is also a number of orifices on the mucous membrane; these are the openings of the mucous follicles, which are distributed in very regular order. OFFICE OF THE STOMACH. It is the office of the stomach to receive the food after it is prepared by mastication, likewise liquid nutriment or other fluids, and to secrete the gastric juice, and subsequently to transmit the digested mass to the small intestine. In the stomach, the food is converted into chyme by the solvent power of the gastric fluid, which gradually acts on the ingesta, from the superficies to the centre of the mass, and as soon as a portion of it is reduced to a homogeneous consistence, it passes into the duodenum, without waiting till the same change has pervaded the whole. The stomach is amply furnished with nerves from each nervous department,--hence, its great sensibility to all kinds of stimuli, and its disturbance by mental causes,--hence, also, the surprising sympathy existing between it and most functions of the system, so that the healthy condition of the stomach actually depends upon the tr...
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About the Author
JAMES PAXTON received a PhD at Queen's University in Kingston, and now teaches American history at Moravian College, Bethlehem, Pennsylvania. He researches and writes on various aspects of First Nations' and British North American history. He divides his time between Toronto and Bethlehem.
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