Question

Which of the following is not a modification of mucosa of alimentary canal?

• A. Microvilli
• B. Rugae
• C. Villi
• D. Bruner's glands

Answer 1

Answer: (D)

Bruner's glands

Bruner's glands are compound tubular sub-mucosal glands found in the portion of the duodenum which is above the hepato-pancreatic sphincter. The main functions of this gland is to produce a mucous rich alkaline secretion in order to protect the duodenum from acidic content of chyme, lubricate the intestinal walls, provide an alkaline condition for the intestinal enzymes to be active, thus enabling absorption. Hence, Bruner's glands are present in the submucosa of the alimentary canal and they are not a modification of mucosa of the alimentary canal.

So, the correct answer is 'Bruner's glands'.