[Acute and chronic influences of transection of extrinsic nerves on extension of the strip of dog's stomach (author's transl)].

25 adult dogs for acute experiments and 15 for chronic experiments in 3 months after transection of extrinsic nerves were employed under Nembutal anesthesia. The strip preparation which had been made on gastric corpus and had maintained innervation and blood supply was stretched by means of a poise load of 10 g, 20 g and 30g every 1 minute. The length of extension of strip was measured at an interval of 10 seconds till 1 minute at every load. On the rate of extension, the load/length of extension and the length of extension/time were investigated. The length of extension had a tendency to become shorter and its slope descended slowly after vagotomy or splanchnicotomy compared to the intact one. These facts were obtained on both acute and chronic experiments. It may be concluded that the transection of both extrinsic nerves supplied to the stomach produced the elevation of intragastric pressure.