Duodenum
RUQ
The duodenum is the beginning or first segment of the small intestine. It is an important part of the digestive system, responsible for further breaking down food after it has passed through the stomach.
The duodenum is about 25-30 cm long and is located just below the stomach. It receives partially digested food, digestive juices, and enzymes from the stomach, pancreas, and liver. The contents of the stomach are mixed with alkaline secretions from the pancreas and bile from the liver, which help neutralize the acidic contents of the stomach.
As the food moves through the duodenum, it is further broken down by enzymes such as pancreatic amylase, lipase, and proteases. The broken down nutrients are then absorbed into the bloodstream through the duodenal wall.
In addition to its digestive functions, the duodenum is also responsible for regulating the release of hormones like secretin and cholecystokinin. These hormones help stimulate the release of digestive enzymes and bile from the pancreas and liver respectively, further aiding in the digestive process.
Overall, the duodenum plays a vital role in the digestive system and ensures that the body is able to break down and absorb nutrients from the food we eat.
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