Abstract
Summary
1. In the dog stimulations of the vagus repeated at short intervals are followed by contractions of the stomach of approximately uniform amplitude.
2. Prolonged stimulation of the vagus is followed by a single contraction of the stomach and its usual subsequent relaxation in spite of continued stimulation. Failure of cardiac inhibition occurs at about the same time as relaxation of the stomach begins.
3. Reduction of the body temperature to 25° C. to 23° C. is followed by decreased response to vagus stimulation but no indications of either failure of gastric response to repeated vagus stimulation or tetanus. At 21° C. vagus stimulation is without effect on the stomach but stimulation of the stomach wall is followed by a contraction.
4. Partial asphyxia of the stomach by shutting off the blood supply to the part is followed by rapid failure of gastric response to repeated vagus stimulations similar to that observed in the turtle. Removal of the asphyxia is followed by recovery of the gastric response to stimulation.
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