Skip to content
Login Register

Practice question

MCQ

Question

The pH of gastric acid (HCl) in the human stomach lumen can be as low as 1.5. Still, normally, it does not corrode the gastric mucosa because:

Options

Choose one · Correct answer highlighted

Explanation

Gastric mucosa secretes bicarbonate-rich mucus forming protective gel layer over epithelium. This barrier neutralizes acid locally, prevents back-diffusion of H+ ions and contains prostaglandins maintaining blood flow, thus protecting stomach lining from autodigestion despite pH 1.5.

Discussion

Comments

0 comments

No comments yet. Be the first to start the discussion.

Related blogs

Guides and insights connected to this topic