Advertisements
Advertisements
प्रश्न
How is the intestinal mucosa protected from the acidic food entering from stomach?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Match column I with column II
| Column I | Column II | ||
| a | Bilirubin and biliverdin | 1 | Parotid |
| b | Hydrolysis of starch | 2 | Bile |
| c | Digestion of fat | 3 | Lipases |
| d | Salivary gland | 4 | Amylases |
Answer briefly:
How does bile help in the digestion of fats?
Describe the process of digestion of protein in stomach.
Bile juice contains no digestive enzymes, yet it is important for digestion. Why?
Name different types of teeth and their number in an adult human.
Emulsification of fats is brought about by ______.
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 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 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)
How are the activities of gastro-intestinal tract regulated?
A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal.
