Your stomach is like a mixing bag full of strong acid. The cells lining it make that acid, and they also make slime so the stomach doesn't digest itself!
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The inside of your stomach is covered with a soft lining made of cells. The lining is full of tiny pits, like little holes in a sponge.
Scroll up to the 3D model and press Make acid.
When you eat, your stomach muscles squeeze and churn the food. The acid and juices mix in and turn it into a thick soup.
The acid also helps kill many germs that sneak in with your food.
Stomach acid is super strong, strong enough to break down tough foods like meat. That is why your stomach needs a shield of slime!
The slime-making cells cover the lining with a thick layer of mucus. It stops the acid from hurting the stomach's own cells.
Even so, the cells on the surface get worn out fast. Your body replaces them with brand new ones every few days.
Press Make slime to see the shield light up.
By Operation Ouch. A fun video for kids.
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