American journal of physiology (1898) (14801619803)

Identifier: americanjourna06ameruoft (find matches)
Title: American journal of physiology
Year: 1898 (1890s)
Authors: American Physiological Society (1887- ) American Physiological Society (1887- ). Abstracts of papers presented at the fall meeting American Physiological Society (1887- ). Proceedings
Subjects: Physiology Physiology
Publisher: (Bethesda, Md., etc.) American Physiological Society (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto



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l the parts were boiled together except ^ iMall : Johns Hopkins Hospital Reports, 1S96, i, p. 93. ■ Sabbatani and Pasola: Archives italiennes de biologie, 1900, xxxiv, p. 195.^ See FuBiNi and Luzzati : Moleschotts Untersuchungen, 1888, xiii, p. 386,for an array of observers who declare that antiperistalsis is not a normal movement.* Grutzner ; Archiv fiir die gesammte Physiologic, 1898, Ixxi, p. 513. Study of Movements of Intestines by Rontgen Rays. 273 the ^gg, which was added after the boiled portion was cooled.The small amount injected was 25 c.c.; the large amount almost90 c.c, about the capacity of the large intestine when removed fromthe body. The animals were given first a cleansing injection, andafter this was effective the nutrient material was introduced. Inorder to make sure of the observation, a control radiograph was firsttaken to show no bismuth food present, and other radiographs takenat Varying intervals after the injection to record the course the foodwas following.
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1.50 2.15 3.00 Figure 9.— Radiographs showing that after a large nutrient enema (about 90 c.c.) hasbeen given, the food is forced more and more from the large into the small intestine.The enema was introduced at about 1.40 p. m. At 3.00 segmentation was occurringin many loops. These experiments show that when small amounts of nutrientfluid are introduced they lie first in the descending colon. In everyinstance antiperistaltic waves are set going by the injection and thematerial is thereby carried to the caecum. When large amounts areinjected they stop for a moment in the region between the transverseand descending colon as if a constriction existed there. Then a con-siderable amount of the fluid passes the point and antiperistaltic wavescarry it to the caecum. In any case the repeated passing of the wavesseems to have the effect of promoting absorption, for in the regionwhere these waves continue running, the shadows become graduallymore dim and finally the bismuth appears to be onl