File:Vegetative neurology - the anatomy, physiology, pharmacodynamics and pathology of the sympathetic and autonomic nervous systems (1919) (14753893756).jpg

Identifier: vegetativeneurol1919higi (find matches)
Title: Vegetative neurology : the anatomy, physiology, pharmacodynamics and pathology of the sympathetic and autonomic nervous systems
Year: 1919 (1910s)
Authors: Higier, Heinrich Kraus, Walter Max, 1889-
Subjects: Autonomic nervous system Sympathetic nervous system Autonomic Nervous System Sympathetic Nervous System
Publisher: Washington : Nervous and Mental Disease Pub. Co.
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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led apart, the former, which retainsAuerbachs plexus, remains normal in activity, while the nervelesscircular musculature loses its automaticity, rhythmicality and re-fraction period of contraction. Two groups of reflexes are supposed to take place in the in-testinal tract, one tactile, mechanical, the other chemical. The firstact as stimuli for peristaltic activity and continue to act even whenindigestible substances are present in the gut. The chemical reflexeson the other hand have to do with changes in the tonicity of thependulum movements. The reflex continues as long as there areany absorbable substances left in the intestine and the effect varieswith the character of the substances. In gastro-intestinal diseasethe resorptive pendulum activities cease and only the coarse me-chano-peristaltic activities remain (L. Miiller). The various types of intestinal activity (pendulum and recto-petal) depend upon rhythmic contraction of the longitudinal and Plate 5 Grenzstrang dN. sympatii.
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1. LumbalwirbeConus terminalis Gangl. mesentericint. Gangl. hypogastri Prostata. 1 N. dorsalis peni M. perinaei pro Jund. (Compressor urethrae) Gangl.haemor-rhoidale N. haemorrh. N. perinaei > M. sphincter ani ext M. sphincter ani int. Schematic Representation of the Innervation of the Pelvic Viscera. (Braune & Muller.) SPECIAL PATHOLOGY AND CLINICAL ASPECT 91 circular musculature. These may go on without the interferenceof the cerebrospinal axis, as experiments show, which completelyisolate the intestine at the same time transecting the spinal cord andsevering the vagi, thus isolating the abdominal ganglia. The intes-tine, is, however, regulated by the nerves passing to it (vagi, splanch-nics), for stimulation of the sympathetic splanchnic causes vaso-constriction and inhibition of peristalsis, stimulation of the autonomicvagus causes vasodilatation and increase of peristalsis. The small intestine and the ascending colon are innervated asfollows: (a) Sympathetic.—N. splanchn

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