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The epithelial cells lining the stomach of vertebrates are protected from damage by HCl because
Option: 1
HCl is too dilute
Option: 2
The epithelial cells are resistant to action of HCl
Option: 3
HCl is neutralized in the stomach
Option: 4
The epithelial cells are covered by a mucus secretion
Answers (1)
Role of Mucus and Bicarbonates -
The mucus and bicarbonates present in the gastric juice play an important role in lubrication and protection of the mucosal epithelium from excoriation by the highly concentrated hydrochloric acid. Hence, the correct answer is option d.
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