Question

Which of the following help in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid?

a. Mucus
b. Pepsin
c. Trypsin
d. Bile​

Answer 1

Mucus helps in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid.

Answer 2

Mucus helps in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid (Option - a)

• The inner lining of the stomach- mucosa is covered with mucus.
• It lubricates the stomach, and alimentary canal and allows easy passage of food.
• It also protects the cells from hydrochloric acid and maintains neutral pH whereas the luminal pH is acidic.
• It also prevents the proteolytic enzymes such as pepsin released by chief cells as pepsinogen(zymogen - inactive enzyme) from digesting our own body /stomach cells.
• Gastric mucus is a glycoprotein.