The Calcutta Journal of Medicine (Volume 24, No. 4 ); A Monthly Record of the Medical Auxiliary Sciences

 
9781235806858: The Calcutta Journal of Medicine (Volume 24, No. 4 ); A Monthly Record of the Medical Auxiliary Sciences
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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.1905 Excerpt: ... EDITOR'S NOTES. ft P The Mechanism of Deglutition. Dr. Julius Schreiber, the Director of the Universitats-Poliklinik at Kouigsberg, has recently carried out some exact and valuable observations on the mechanism of deglutition. He recorded the pharyngeal part of the swallowing movement by means of a tambour placed within the pharynx, the laryngeal movements by a tambour affixed outside the larynx, and the passage of the bolus down the gullet by means of a string tied by one end to the bolus, the other end passing over a pulley to a writing style. The observations were mostly carried out ou a neurotic patient, habituated to the passage of the oesophageal sound. From his observations, which are given in the form of curves, Dr. Schreiber establishes the fact that all ingesta, fluid or soft boluses, are expressed by the combined action of the muscles of deglutition out of the closed and airtight cavity of the mouth--or auricle of deglutition, if we compare the mechanism with that of the heart--into the pharynx--or ventricle of deglutition--whence by the contraction of the sphincters it was forced into the beginning of the gullet. Down this the bolus is carried by a peristalsis which varies in rate in the cervical and thoracic parts respectively, to the epicardia, which it reaches in about five seconds after the beginning of deglutition. The last four or five centimetres of the gullet act as a sphincter, and after a pause of 0.3 to 0 5 sec, press the bolus on into the stomach. This last part of the act occupies two to four seconds, so that the whole process of deglutition takes seven to nine seconds in its execution, a period which agrees with that at which an auscultatory sound can be heard in the stomach after the swallowing of fluid (Meltzer). Dr. Schreiber co...

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