What is the Proximal third of small intestine?

The proximal third of the small intestine is also known as the duodenum. It is the first and shortest segment of the small intestine, and it connects the stomach to the rest of the small intestine. The duodenum is about 10-12 inches (25-30 cm) long and is located on the right side of the abdomen. The duodenum is responsible for breaking down food and absorbing nutrients, and it also plays a role in regulating digestion.

The duodenum is lined with villi and microvilli, which are small, finger-like projections that increase the surface area of the intestine and help to absorb nutrients. The duodenum also produces enzymes that help to break down food, such as amylase, which breaks down carbohydrates, and lipase, which breaks down fats.

The duodenum is also responsible for regulating the flow of bile from the liver and gall bladder into the small intestine. Bile helps to break down fats and emulsify them so they can be more easily absorbed.

The duodenum is an important part of the digestive system and plays a vital role in breaking down food and absorbing nutrients.