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In patients unconscious from any cause, but especially in drunkenness and anesthesia, the inability close the glottis permits a portion the ejected matter dissertation publishing aspirated into the trachea and bronchi, causing suffocation, or aspiration or the so-called deglutition pneumonia. FOOD AND DRINK, DIGESTION AND DEFECATION The vomiting center lies in the medulla close the respiratory center, and vomiting produced chiefly through the muscles respiration. The center may stimulated action directly, as poisons circulating in the blood, essay writing service law school apomorphia being the best example or indirectly reflex irritation from various peripheral sources. Vomiting more easily provoked dissertation consulting fees in children because the great susceptibility the nervous system and the upright position and underdevelopment the fundus the stomach. The regurgitation an excess food online dissertations in babies has little in common with vomiting, the act being free from nausea and other disagreeable sensations. Centric Causes. In addition the poisoning the center apomorphia already mentioned, centric vomiting occurs from the action alcohol, ether, and chloroform. The toxic substances circulating in the blood in uremia cause the centric vomiting which most commonly met with the clinician. The toxemia the acute infectious diseases, especially in children, accompanied vomiting.
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While often seen at the onset pneumonia, diphtheria, small-pox, yellow fever, erysipelas, measles, and mumps, centric vomiting becomes more diagnostic significance in scarlet fever, for here scarcely ever absent. In Addison's disease, diabetes, and various chronic diseases accompanied toxemia, vomiting may Vomiting may occur from irritation the center origin, write my personal statement the peripheral distribution the pneumogastric nerve. Direct irritation the terminal fibers in the gastric wall the most frequent cause, this irritation depending upon the structural damage the stomach, as in ulcer, cancer, and gastritis upon pressure from without, as in ascites upon irritation emetic drugs, or stomach contents which are abnormal in character. The impulse vomit carried from the center in the medulla the various visceral muscles concerned, the phrenic and vagus nerves, and the muscles the abdominal wall the spinal nerves.
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Pressure upon the vagi enlarged bronchial glands, as in tuberculosis, and after pertussis, causes a severe cough which often accompanied or followed vomiting. Cerebral vomiting depends upon irritation the vagus at its origin.
This irritation may proceed from meningitis, as in the tubercnlous and epidemic forms need help on writing an essay from anemia or hyperemia from concussion from the pressure tumor or abscess from sudden changes in equilibrium, as in car-sickness and seasickness from Meniere's disease and rarely as a premonitory symptom apoplexy. Nausea may i need help writing a 5 paragraph essay entirely absent in cerebral vomiting. The emesis sudden and projectile in character, giving the Seflez Vomiting. This may purely psychical, from a subjective emotion, or a disgusting sight or odor.
Nervous Vomiting. help with my thesis This seen in neurotic and especially hysterical individuals in whom the stomach and probably the whole nervous mechanism concerned in vomiting are hyperesthetic. The patients may vomit almost everything taken, for weeks together, and still not emaciate markedly. Deception may practiced and should guarded against. Juvenile vomiting in neurotic children under nervous strain, and the periodic research paper introduction help or cyclic vomiting described Leyden may nervous origin. The latter probably toxemic, may last for a week free thesis help or more, often accompanied hyperacidity and frequently headache, pain in the abdomen, and constipation.