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How is the intestinal mucosa protected from the acidic food entering from stomach?

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प्रश्न

How is the intestinal mucosa protected from the acidic food entering from stomach?

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उत्तर

The mucus and bicarbonates present in gastric juice play an important role in lubrication and protection of the mucosal epithelium from excoriation by highly concentrated hydrochloric acid.

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अध्याय 16: Digestion and Absorption - Exercises [पृष्ठ ९४]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 11
अध्याय 16 Digestion and Absorption
Exercises | Q 7. | पृष्ठ ९४

संबंधित प्रश्न

How does pepsinogen change into its active form?


Answer briefly:

How does bile help in the digestion of fats?


Describe the process of digestion of protein in stomach.


Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?


How are polysaccharides and disaccharides digested?


What would happen if HCl were not secreted in the stomach?


How does butter in your food gets digested and absorbed in the body?


Name different types of teeth and their number in an adult human.


Emulsification of fats is brought about by ______.


Mark the right statement among the following


Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activates it. Which tissue/ cells secrete this enzyme?/ How is it activated?


Correct the following statement by deleting one of entries (given in bold).

Fats are broken down into di- and monoglycerides with the help of amylase/ lipases.


Name 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?


Correct the statement given below by the right option shown in the bracket against them.

Rennin is a proteolytic enzyme found in gastric juice in (infants/adults).


Correct the statement given below by the right option shown in the bracket against them.

Pancreatic juice and bile are released through. (intestine- pancreatic/hepato-pancreatic duct)


Correct the statement given below by the right option shown in the bracket against them.

Dipeptides, disaccharides and glycerides are broken down into simple substances in region of small intestine. (jejunum/duodenum)


How are the activities of gastro-intestinal tract regulated?


Describe the enzymatic action on fats in the duodenum.


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