Question

How the digestive function of duodenum integrated with of the stomach? how do they work together: digest many macronutrient components (fried food like chicken)?

Answer 1

Digestion continues in the duodenum once the chyme enters from the stomach. ... Bile is passed to the gallbladder and then into the duodenum to help with the digestion of fat. The chyme is gradually pushed down the duodenum by peristaltic waves which flow down the length of the small intestineDuodenum

The duodenum is the first part of the small intestine. (The other parts are the jejunum and the ileum.) Digestion continues in the duodenum once the chyme enters from the stomach. The stomach acid is neutralised in the duodenum because of its alkaline environment. The entry of chyme triggers the release of digestive pancreatic enzymes and bile which enter the duodenum via the pancreatic and common bile ducts, respectively. These 2 ducts join the duodenum at the ampulla of Vater, or the hepatopancreatic ampulla.

The pancreatic juice contains enzymes and bicarbonate to neutralise the stomach acid. The pancreatic enzymes are lipase (breaks down fats), protease (breaks down protein) and amylase (breaks down carbohydrates).

Bile is a dark green or brownish coloured fluid produced by the liver. Bile is passed to the gallbladder and then into the duodenum to help with the digestion of fat.

The chyme is gradually pushed down the duodenum by peristaltic waves which flow down the length of the digestive tract.

Most of the digestion of the protein, fats and carbohydrate in the chyme is done by the enzymes in the duodenum, before the resultant mixture is passed further into the small intestine.Food contains three macronutrients that require digestion before they can be absorbed: fats, carbohydrates, and proteins. Through the process of digestion, these macronutrients are broken down into molecules that can traverse the intestinal epithelium and enter the bloodstream for use in the body.The digestion of certain fats begins in the mouth, where short-chain lipids break down into diglycerides because of lingual lipase. The fat present in the small intestine stimulates the release of lipase from the pancreas, and bile from the liver enables the breakdown of fat