Question

How do the hormones secretin, gastrin and CCK affect digestion?

Answer 1

Different enzymes and hormones in the body include gestrin, trypsin, secretin, and enterocrinin. Hormones are chemical messengers that are immediately secreted into the bloodstream, where they are transported to the body's organs and tissues to carry out their duties, whereas enzymes are catalysts. It boosts the rate of a specific chemical reaction in the cell.

Complete answer:
The hormones released by various sections of the gastrointestinal system include secretin, gastrin, and CCK (cholecystokinin). They regulate digestion by promoting the release of different enzymes.
1. Role of secretin in digestion-
Secretin inhibits the release of gastric acid from the parietal cells of the stomach, which helps to regulate the pH of the duodenum.
The pancreas' ductal cells are stimulated to produce bicarbonate.
As a result of the preceding discussion, it is obvious that the secretin hormone is secreted by the S cells of the duodenum and stimulates the pancreas.
2. Role of gastrin in digestion-
Gastrin is a peptide hormone that stimulates the release of gastric acid by the stomach's parietal cells and aids in gastric motility. G cells in the pyloric antrum of the stomach, the duodenum, and the pancreas deliver it.
Gastrin stimulates the gallbladder to empty its bile supply and the pancreas to release chemicals. Bile and pancreatic chemicals aid in the digestion of meals in the small intestine.
3. Role of CCK in digestion-
This hormone is mostly involved in the digestion and hunger processes. The cholecystokinin hormone stimulates pancreatic enzyme and bicarbonate secretion, as well as gallbladder contraction. This hormone is stimulated by exocrine pancreas development, which also decreases gastric emptying (food entry into the intestine by stomach emptying).

Note:
Digestive enzymes aid in the breakdown of complex food items into simpler molecules that the body can absorb. Distinct sections of the alimentary canal create different digestive enzymes that aid in the digestion of different food components during digestion. Saliva, for example, produces salivary amylase, which digests starch. Gastric glands in the stomach create pepsin, which aids protein digestion. Other enzymes, such as trypsin and chymotrypsin, aid in protein digestion as well.