Advertisements
Advertisements
Question
How is the intestinal mucosa protected from the acidic food entering from stomach?
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
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
Choose the correct answer among the following:
Succus entericus is the name given to
(i) a junction between ileum and large intestine
(ii) intestinal juice
(iii) swelling in the gut
(iv) appendix
Describe the process of digestion of protein in stomach.
Bile juice contains no digestive enzymes, yet it is important for digestion. Why?
Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?
What would happen if HCl were not secreted in the stomach?
How does butter in your food gets digested and absorbed in the body?
Which of the following sphincter controls the passage of food into the stomach?
Mark the right statement among the following
The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall. What do we call the food then?
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?
Define digestion in one sentence.
Correct the following statement by deleting one of entries (given in bold).
Goblet cells are located in the intestinal mucosal epithelium and secrete chymotrypsin/mucus.
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)
Describe the enzymatic action on fats in the duodenum.
