NERVOUS REGULATION OF THE HORMONE SECRETION

Publisher Summary This chapter describes the nervous regulation of the hormone secretion. In a n experiment described in the chapter, pancreatic tissue was taken from living dogs under Pentothal anesthesia. After washing the tissue in cooled water and grinding, there followed the acid extraction, fractionated precipitation by ethanol, and heating for 10 min at boiling temperature and lyophysation. The elevation of pancreatic secretion was gained after the stimulation of the periferal end of the vagus. The ascertainment that the stimulation of the central end of the vagus leads to the diminution of the secretion of pancreatic juice consents with earlier experiments. In the sixth group, three zones of electrophoretic division were tested. The hormone secretin does not regulate the extern pancreatic secretion but has only an executive function. The liberation of secretin is under the nervous control. The same reflex liberating the secretin gives in the same time and in the same strength the impulse to liberate the antisecretory mechanism.