McqMate
| Q. |
Adherent mucoid alkaline substance covering the inner lining of stomach is to - |
| A. | digest starch |
| B. | act against bacteria |
| C. | prevent the action of pepsin of mucosa |
| D. | prevent viral infection |
| Answer» C. prevent the action of pepsin of mucosa | |
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Explanation: The continuous adherent mucus layer is also a barrier to luminal pepsin, thereby protecting the underlying mucosa from proteolytic digestion. The primary function of the adherent mucus gel layer is a structural one to create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin. |
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