What is the histology of the duodenum?

In humans, the small intestine usually consists of three sections; The first, when food passes from the stomach, is a duodenum. Junum and ileum are other parts, usually differentiated cell types that line the interior of the tract. This first part is a structure similar to the tube, which is generally 9.8 to 11.8 inches (25 to 30 centimeters). It usually consists of several layers. The duodenal histology is also characterized by microscopic structures called Brunner's glands that can eliminate an ehm that neutralizes stomach acids.

Food often enters the organ only four hours after eating. Small channels can allow the flow of pancreatic enzymes and bile, which also neutralize acids and also help with digestion. The duodenum histology usually represents a compound structure, especially in the mucosa layer, which is usually made up of circular or transverse folds. There are also projections called villai, which are up to 0.04 inches (1 millimeter) long. In their core are lymphatic and blood vessels and notrva.

usually inside the villa is a microscopic layer called the boundary of the brush, which consists of hair similar parts of cells called microvilli. There are also cells of cups that eliminate the mucous membrane to help the food through the tube. Microfold cells also form the histology of the duodenum; They work normally by presenting antigens and different lymph nodes. Cells called lymphocytes often occur in a deeper layer called lamina propria, which also consists of connective tissues. Lymphatic structures may be concentrated in certain areas, while in this layer there are also glands typical of the intestines.

intestinal glands, called Liberekhn crypts, are generally in the shape of a tube and open on the inner surface of the duodenum. There are also mucous membranes and other endocrine cells. Thevrity of submucose is usually the location of Brunner glands, which occur only in the histology of the duodenum. In generalDentified twisted, branched tubular shape, are lined with mucosal secretory cells and usually associate with pipes that lead to intestinal glands.

Circular layer and longitudinal layer of muscle usually form a significant part of the duodenal histology called muscularis. The outer layer is typical of a layer located in the small intestine, while serosa generally forms the outer part of the duodenum. This layer is also part of a peritoneum or tissue that surrounds the abdominal organs.