
Помогите плиз какой процесс происходит в 12-перстной почке


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The Process in the Duodenum
The duodenum is the first part of the small intestine, located between the stomach and the jejunum. It plays a crucial role in the digestion and absorption of nutrients. Let's explore the process that occurs in the duodenum.
1. Chyme enters the duodenum: After food is partially digested in the stomach, it enters the duodenum as a semi-liquid mixture called chyme. The chyme contains partially digested carbohydrates, proteins, and fats.
2. Secretion of digestive enzymes: The duodenum receives secretions from various organs to aid in digestion. The pancreas releases pancreatic enzymes, such as amylase, lipase, and proteases, which break down carbohydrates, fats, and proteins, respectively. The liver produces bile, which is stored in the gallbladder and released into the duodenum to emulsify fats.
3. Neutralization of stomach acid: The duodenum also receives alkaline secretions from the pancreas and the duodenal glands, which help neutralize the acidic chyme coming from the stomach. This creates an optimal pH environment for the digestive enzymes to function.
4. Digestion of nutrients: The digestive enzymes in the duodenum break down the complex molecules in chyme into smaller, absorbable units. Carbohydrates are broken down into simple sugars, proteins are broken down into amino acids, and fats are broken down into fatty acids and glycerol.
5. Absorption of nutrients: The duodenum is responsible for the absorption of nutrients into the bloodstream. The inner lining of the duodenum contains finger-like projections called villi, which increase the surface area for absorption. Nutrients, such as glucose, amino acids, and fatty acids, are absorbed through the villi and transported to the liver for further processing.
6. Regulation of digestion: The duodenum also plays a role in regulating the rate of digestion. It releases hormones, such as secretin and cholecystokinin (CCK), in response to the presence of chyme. These hormones stimulate the release of pancreatic enzymes and bile, respectively, and also help regulate the movement of food through the digestive tract.
In summary, the duodenum is involved in the digestion and absorption of nutrients. It receives chyme from the stomach, secretes digestive enzymes, neutralizes stomach acid, digests nutrients, absorbs them into the bloodstream, and regulates the digestive process.
Please note that the information provided above is based on search result snippets and should be used for informational purposes only. For more detailed and accurate information, it is recommended to consult reliable medical sources or consult with a healthcare professional.


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