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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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संबंधित प्रश्न
Choose the correct answer among the following:
Gastric juice contains
(i) pepsin, lipase and rennin
(ii) trypsin lipase and rennin
(iii) trypsin, pepsin and lipase
(iv) trypsin, pepsin and renin
How does pepsinogen change into its active form?
Answer briefly:
How does bile help in the digestion of fats?
How are polysaccharides and disaccharides digested?
How does butter in your food gets digested and absorbed in the body?
Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activates it. Which tissue/ cells secrete this enzyme?/ How is it activated?
Name the enzymes involved in the breakdown of nucleotides into sugars and bases?
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.
Correct the following statement by deleting one of entries (given in bold).
Saliva contains enzymes that digest starch/protein.
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.
A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal.
