duodenaaliset

Duodenaaliset refers to the duodenum, the first section of the small intestine in the digestive system. It begins at the stomach and ends at the jejunum. The duodenum plays a crucial role in the digestion of food, receiving partially digested food from the stomach and mixing it with digestive juices from the pancreas and liver. These juices contain enzymes that break down carbohydrates, proteins, and fats.

The wall of the duodenum contains glands that secrete mucus, which protects the lining from the acidic chyme coming from the stomach. Bile from the liver and gallbladder enters the duodenum to emulsify fats, and pancreatic enzymes further aid in their breakdown. Absorption of nutrients also begins in the duodenum, although the majority of absorption occurs in the jejunum and ileum.

Various conditions can affect the duodenum, including duodenitis, which is inflammation of the duodenal lining. Peptic ulcers, open sores that develop on the lining of the duodenum, are also common. These can be caused by infection with Helicobacter pylori bacteria or by the use of nonsteroidal anti-inflammatory drugs (NSAIDs). Other conditions include duodenal obstruction, malabsorption syndromes, and tumors. Diagnostic procedures like endoscopy allow for direct visualization of the duodenal lining and obtaining tissue samples for biopsy.