Inside the human intestines
Chapter 1
The small intestine and its microscopic forests
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Chapter 2
The chemistry of nutrient capture
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Chapter 3
The large intestine as the recycling plant
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Chapter 4
The bustling world of the microbiome
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YOUR GOAL
Master of Inside the human intestines
Ch 1 · The small intestine and its microscopic forests
teacher Lead: No tennis court inside your tummy, / Response: (No way!) / Lead: Just a cozy studio absorbing yummy! / Response: (Oh yeah!)
Fun Fact
Intestinal surface: Your small intestine's inner surface area is so folded and packed with tiny villi that it could cover an entire tennis court.
Glossary
villi (plural noun)
Tiny, finger-like projections on the surface of certain membranes, typically serving to increase surface area. They number between 10 and 40 per square millimeter within the human digestive tract.
Tiny, finger-like projections on the surface of certain membranes, typically serving to increase surface area. They number between 10 and 40 per square millimeter within the human digestive tract.
Quiz
If the inner lining of an adult small intestine were completely flattened, what would its surface area equal?
Quiz
Which of the following best describes the texture of the inside of a healthy small intestine?
Quiz
Which part of the small intestine is the first section that connects directly to the stomach?
Quiz
What are the tiny, finger-like projections that line the inner walls of the small intestine called?
Quiz
How much does the folding of the small intestine's lining increase its total surface area?