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The human digestive system
4 chapters
56 assets
by teacher · 10 jul 2026
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Chapter 1
The gateway of the mouth
1
Why spit is a scientific superhero
2
The mechanical power of human teeth
3
The gravity defying slide of the esophagus
4
How taste buds talk to your brain
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Chapter 2
The acid chamber of the stomach
1
The chemistry of stomach acid
2
How the stomach avoids digesting itself
3
The mechanical churning of gastric muscles
4
The discovery of gastric digestion
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Chapter 3
The nutrient highway of the small intestine
1
The incredible surface area of absorption
2
The chemical helpers of the pancreas and liver
3
How nutrients cross into the bloodstream
4
The enteric nervous system or second brain
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Chapter 4
The recycling plant of the large intestine
1
Reclaiming water and essential salts
2
The bustling metropolis of the gut microbiome
3
The final exit and waste storage
4
How dietary fiber keeps the system moving
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YOUR GOAL
Master of The human digestive system
