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. 1900 Excerpt: ...thus far suggests that the myenteric reflex does not hold the small intestine in a fixed and rigid mode of action, but may at times be so far in abeyance as to permit waves of constriction to pass in a direction opposite to the normal. This reversal of peristalsis has been seen in the living animal by means of the X ...
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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. 1900 Excerpt: ...thus far suggests that the myenteric reflex does not hold the small intestine in a fixed and rigid mode of action, but may at times be so far in abeyance as to permit waves of constriction to pass in a direction opposite to the normal. This reversal of peristalsis has been seen in the living animal by means of the X-rays. An obstruction was present about 10 cm. beyond the pylorus. The course taken by food passing along the duodenum was carefully traced on transparent paper laid over a fluorescent screen. After the mass which accumulated above the obstruction had been worked over for some time by alternating periods of segmentation and peristalsis, it was suddenly divided, and the proximal portion was moved rapidly back along the course which had been traced, even up to the pylorus. This reversed conveyance of the food was seen repeatedly with perfect clearness.23 Other evidence that antiperis'talsis may occur in the small intestine has been secured by watching directly, some time after operation, the action of a reversed part of the gut. More than three months after operation Kelling thus saw intestinal contents moved towards the colon through a reversed portion by distinct peristaltic waves.24 Similar observations have been reported by Enderlen and Hess, Beer and Eggers, and McClure and Derge.28 And the clinical evidence that in cases of intestinal obstruction continued vomiting of offensive decomposed material occurs after the stomach has been repeatedly washed, can also be interpreted as due to upward-running waves in the intestine. Although, as Mall and others have shown, reversal of a piece of gut is likely to result in the early accumulation of indiges 25 Cannon and Murphy: Annals of surgery, 1906, xliii, p. 524. Conceivably the factor of fatigue, whi...
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Like New. Used-Like New. This is a reproduction of an out of print title. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. Ships from UK in 48 hours or less (usually same day). Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. 100% money back guarantee. We are a world class secondhand bookstore based in Hertfordshire, United Kingdom and specialize in high quality textbooks across an enormous variety of subjects. We aim to provide a vast range of textbooks, rare and collectible books at a great price. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions. We provide a 100% money back guarantee and are dedicated to providing our customers with the highest standards of service in the bookselling industry.
