Q. 7
How is the intestinal mucosa protected from the acidic food entering from stomach?
Answer :
The intestinal mucosal epithelium has goblet cells which secrete mucus.
The secretion of brush border cells (of mucosa) and the goblet cells together form intestinal juice also known as succus entericus. This juice contains enzymes like disaccharidases, dipeptidases, lipases, nucleosidases, etc.
The mucus plus the bicarbonates from the pancreas protects the intestinal mucosa from acidic food entering from the stomach. They also provide an alkaline medium (pH 7.8) for enzymatic activities.
Rate this question :
Rapid Quiz on Digestion58 mins
Revise Digestion and Absorption with Questions42 mins
FAQs on Digestive System57 mins
Learn Digestive System through Mindmap61 mins
Clear your concepts of Anatomical structure of Intestine53 mins
Target NEET 2021-2022 | Important Questions of NCERT Exemplar | Digestion & Absorption35 mins
Structure of Alimentary Canal61 mins
Master Glands of Alimentary Canal {Special}79 mins
NCERT Exemplar | Digestion & Absorption Part 225 mins
Target NEET 2021-2022 | Important Questions Based on NCERT | Digestion & Absorption31 mins
How is the intestinal mucosa protected from the acidic food entering from stomach?
Biology - ExemplarDiscuss the role of hepato – pancreatic complex in digestion of carbohydrate, protein and fat components of food.
Biology - ExemplarHow are the activities of gastro-intestinal tract regulated?
Biology - ExemplarWhat are three major types of cells found in the gastric glands? Name their secretions.
Biology - ExemplarDescribe the enzymatic action on fats in the duodenum.
Biology - ExemplarWhat is pancreas? Mention the major secretions of pancreas that are helpful in digestion.
Biology - ExemplarName the part of the alimentary canal where major absorption of digested food takes place. What are the absorbed forms of different kinds of food materials?
Biology - Exemplar
