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Delhi Police Constable Exam Model Paper 4
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© examsnet.com
Question : 24
Total: 100
What is the role of mucus secreted by the stomach?
To protect the lining of the stomach
To digest fats
To kill the germs in the food
To digest the proteins
Validate
Solution:
The correct answer is
To protect the lining of the stomach.
Mucus or Gastric mucus
is a gel barrier
secreted by epithelial cells
&
glandular cells
in the stomach wall.
It acts as a part of
the barrier that protects the stomach wall from the acid and digestive enzymes
within the stomach lumen.
This barrier is also made up of bicarbonate secretion & the epithelial cells themselves, which are tightly joined together.
Together these components prevent the stomach from effectively digesting itself.
HCL: converts the medium of food from alkali to acidic that also enables pepsin to do its work.
Mucus: protects the inner lining of the stomach from HCL.
Pepsin: helps in breaking down or digestion of protein in the stomach.
Hydrochloric acid helps in the functionality of pepsin at the same time kills bacteria and mucus.
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