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 located in the 
Select and explain. 
A. Duodenum, B. Jejunum, C. Ileum, D. All
A: Duodenum
Answer: A: Duodenum 
Explanation: INDERBIR SINGH&;S TEXTBOOK OF HUMAN HISTOLOGY-PAGE NO:272 The 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 alimentary canal.the submucosa is also typical except in the duodenum,where it contains the glands of brunner