Inside the human stomach

Chapter 1

The physical blender

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Chapter 2

The chemical cauldron

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Chapter 3

The ultimate self-defense

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Chapter 4

The brain-gut hotline

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YOUR GOAL

Master of Inside the human stomach

Ch 3 · The ultimate self-defense

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teacher Shielding the walls, shielding the walls! This mucus barrier never falls!

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teacher The ulcer-causing invader in the stomach

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Fun Fact

Fast healing: The stomach heals faster than almost any other organ, repairing minor surface damage within just a few hours.

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teacher Rapid-fire cell renewal every few days

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Glossary

mucus (noun)
A viscous, slippery substance secreted by mucous membranes to protect and lubricate surfaces. In 1833, William Beaumont discovered that this slimy coating shields the stomach wall from corrosive gastric acid.

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Quiz

Why does acid reflux burn the esophagus but not the stomach?

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Gossip

What is your go-to remedy for heartburn?

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Quiz

Which cells in the stomach lining secrete the protective mucus?

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Gossip

Would you swallow bacteria for a prize?

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Quiz

What is the name of the deep microscopic indentations where new stomach cells are born?

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Quiz

What did scientist Barry Marshall do to prove that bacteria caused stomach ulcers?

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Quiz

How often does the human stomach completely replace its inner lining?

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Quiz

Which chemical compound is embedded in stomach mucus to neutralize acid?

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Quiz

What is a painful sore that develops on the lining of the stomach called?

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Quiz

Which bacterium is the primary cause of most stomach ulcers?

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