MRCP UK EXAMINATIONS

Detailed explanation-1: -The duodenum is about 25 to 30 cm long (“twelve fingers’ length”), C-shaped and is located in the upper abdomen at the level of L1-L3. The head of the pancreas lies in the C loop. It may be subdivided into four sections: superior part, descending part, horizontal part and ascending part.

Detailed explanation-2: -Normal Histology. This is the low power microscopic appearance of the duodenum with the mucosa, the submucosa, the muscularis with both the inner circular as well as the outer longitudinal coats of smooth muscle. There is a lymphoid nodule in the submucosa, characteristic for gut-associated lymphoid tissue.

Detailed explanation-3: -The submucosa of the duodenum contains coiled compound tubular mucous glands known as glands of Brunner that secrete an alkaline fluid rich in mucus. These glands are more numerous in the proximal region of the duodenum. They usually open at the base of the intestinal glands.