Multiple choice

The epithelial cells lining the stomach of vertebrates are protected from damage by HCl because

  1. HCl acid is too dilute

  2. the epithelial cells are resistant to the action of HCl acid

  3. HCl is neutralised by alkaline gastric juice

  4. the epithelial cells are covered with a mucous secretion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The epithelial cells lining the stomach of vertebrates are protected from damage by HCl because the epithelial cells are covered with a mucous secretion.

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