This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Brunner&;s glands are seen in 
Select and explain. 
A. Duodenum, B. Gastric, C. Gall bladder, D. Ileum
A: Duodenum
Answer: A: Duodenum 
Explanation: INDERBIR SINGH&;S TEXTBOOK OF HUMAN HISTOLOGY-PAGE NO:272The wall of the small intestine is made up of the four layers: mucous, submucous, muscularis and serous.the serous and muscular layers correspond exactly to the general structure of the alimentary canal. the submucosa is also typical except in the duodenum, where it contains the glands of Brunner