Osteopathy Complete . mulation of thevagus increases the movements of the small intestine,either by conducting impressions to the plexus mesentericus,or by causing contraction of the stomach, which stimu-lates the intestine in a purely mechanical manner. Thesplanchnic is the inhibitory nerve of the small intestineonly as long as the circulation in the intestinal blood-vessels is undisturbed and the blood in the capillaries doesnot become venons. When the latter condition occurs,stimulation of the splanchnic increases the peristalsis. Ifarterial blood be freely supplied, the inhibitory action c
Osteopathy Complete . mulation of thevagus increases the movements of the small intestine,either by conducting impressions to the plexus mesentericus,or by causing contraction of the stomach, which stimu-lates the intestine in a purely mechanical manner. Thesplanchnic is the inhibitory nerve of the small intestineonly as long as the circulation in the intestinal blood-vessels is undisturbed and the blood in the capillaries doesnot become venons. When the latter condition occurs,stimulation of the splanchnic increases the peristalsis. Ifarterial blood be freely supplied, the inhibitory action con-tinues for some time. Stimulation of the origin of thesplanchnics of the spinal cord in the dorsal region, underthe same conditions, and even when general tetanus has beenproduced by the administration of strychnine, causes aninhibitory effect. It is believed that the splanchnic contains, besides theinhibitory fibers, which are easily exhausted by a venouscondition of the blood, motor fibers, which remain excitable. THE IXTESTIXES. 143 for a longer time, because, after death, stiniulation of tliesplancbnics always causes peristalsis, the same as stimula-tion of the vagus. It is the yaso-motor nerve of the intes-tinal blood-vessels, governing the largest vascular area inthe body. When it is stimulated, all the vessels of the intes-tine, which contain muscular fibers in their walls, contract;when it is divided, they dilate. In the latter case a largeamount of blood accumulates within the blood-vessels of theabdomen, so that there is aneihia of the other parts of thebody, which may be so great as to cause death, owing to thedeficiency of blood in the medulla oblongata. Effect of Nerves on the Rectum.—The nervi erigentes,when stimulated, causes the longitudinal muscular fibersof the rectum to contract, while the circular muscularfibers are supplied by the hypogastric nerves. Stimu-lation of the hypogastric also exerts an inhibitory effecton the longitudinal muscles. Stimulatio
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectosteopa, bookyear1898
