Which of the following hormone decreases intestinal motility?
Correct Answer: Glucagon
Description: Glucagon is produced by the A cells of the pancreatic islets and the upper gastrointestinal tract. It is glycogenolytic, gluconeogenic, lipolytic, and ketogenic. Large doses of glucagon produce profound relaxation of the intestine. It has a potent inotropic and chronotropic effect on the hea, mediated by the cAMP mechanism. It also stimulates the secretion of growth hormone, insulin, and pancreatic somatostatin. CCK (Cholecystokinin), gastrin, and serotonin increases intestinal motility. Ref: Barrett K.E., Barman S.M., Boitano S., Brooks H.L. (2012). Chapter 24. Endocrine Functions of the Pancreas & Regulation of Carbohydrate Metabolism. In K.E. Barrett, S.M. Barman, S. Boitano, H.L. Brooks (Eds), Ganong's Review of Medical Physiology, 24e.
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now