Structure of the Pancreas The pancreas is located behind the stomach in the uppe
ID: 3522890 • Letter: S
Question
Structure of the Pancreas The pancreas is located behind the stomach in the upper abdominal cavity. It has three parts: Head: Near the dusdenuA . Body: The middle portion Tail: Touches the spleen The acini are exocrine secretory cells that form the majority of the organ. A small portion of the cells are endocrine pancreatic islets that release insulin and glucagon (Chapter 11). The acini release a mixture of enzymes called pancreatic juice into a centrally located pancreatic duct. These juices eventually make their way into the small intestine. Functions of the Pancreas of the The pancreas releases alkaline, enzyme-rich pancreatic juice into the small intestine. What is the function of this juice? Regulation of Pancreatic Secretions The activities of the pancreas are regulated by: Involuntary control centers of the brain . Hormones: Secretin andExplanation / Answer
Functions of the Pancreatic juice--
* duodenum
*Pancreatic juice contains a variety of enzymes like trypsinogen, chymotrypsinogen, pancreatic lipase, pancreatic amylase, nucleases and carboxypeptidase. These enzymes complete the digestion of food so that the nutrients can be absorbed by the villi in the small intestine. Pancreatic lipase digest the starch completely to give glucose. Pancreatic amylase breaks down the fats into fatty acids and glycerol and trypsin, chymotrypsin and carboxypeptidase complete the digestion of proteins and convert them into amino acids.
Regulation of Pancreatic secretions
Secretin and gastrin [ stomach walls ] / cholecystokinin [ intestine ]
1] * Secretin helps regulate the pH of the duodenum. It inhibits the secretion of gastric acid from the parietal cells of the stomach and stimulating the production of bicarbonate from the ductal cells of the pancreas.
* The bicarbonate ions help to neutralise the acidic nature of the chyme coming from the stomach so that the pancreatic enzymes can act on the food and complete the digestion.
2. CCK or Cholecystokinin is a peptide hormone of the gastrointestinal system responsible for stimulating the digestion of fats and proteins. It stimulates the acinal cells of the pancreas to secrete the hormones necessary for digestion of these nutrients into simple forms to be absorbed by the body.