The original answer posted was Cholecystokinin, which is actually a peptide hormone that is released to inhibit gastric mobility. But it is not the first hormone to be released when fat or food initially contacts the duodenum.When Fat enters the duodenum, this accounts for the third phase of gastric secretion, called intestinal phase. This phase accounts for 5% of the total secretory response. It begins when food leaves the stomach and enters the small intestine (duodenum). When the food first contacts the intestinal wall, it stimulates intestinal cells to release a hormone called, intestinal gastrin, that enhances gastric gland secretion.
Cholecystokinin is a hormone found in the duodenum. Cholecystokinin stimulates the release of bile.
When highly acidic chyme enters the duodenum, the hormone secretin is released. Secretin stimulates the pancreas to release bicarbonate-rich fluids to neutralize the acidity of chyme coming from the stomach.
Bilirubin is used by the liver, to make bile
Taking in more calories than you're using up stimulates fat formation. If you're burning up what you eat, then you won't get fat.
Growth hormone stimulates lipolysis, which is the breakdown of fats in the body. This hormone helps to release stored fat from fat cells into the bloodstream, where it can be used for energy.
luteinizing hormone (LH)
more chyme into the duodenum
Oestrogen stimulates the hormone LH. LH is secreted in pituitary gland and stimulates the release of an egg
The intestinal hormone that stimulates mucus secretion by the submucosal duodenal glands is called secretin. Secretin is released in response to acidic chyme entering the duodenum, signaling the pancreas to release bicarbonate-rich fluid to neutralize the acidity and protect the intestinal lining.
The interstitial cell-stimulating hormone stimulates ovulation in the female and production of the female sex hormone progesterone. In the male, it stimulates the secretion of testosterone.
The luteinizing hormone stimulates ovulation in the female and production of the female sex hormone progesterone.
growth hormone-releasing hormone from the hypothalamus