Villi are linked between the digestive systme and excretory system.
2 Pipes
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These are called villi and there are millions of them that line the small intestine and large intestine (Colon) they absorb the nutrients particularly in the Colon where they absorb liquid into the blood stream. This is what makes your stools hard (constipation) and painful to pass if you wait too long to go for a number 2. The peristaltic action moves the liquid along the small and large intestines.
Villi are tiny finger-like projections which line the small intestine. Villi are perfect for absorbing food into the blood because: 1) They have a very thin outer layer of cells 2) They have a good blood supply 3) They provide a large surface area for absorption
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Villi are in the small intestine and alveoli are in the lungs. They both work by diffusion.
These 2 systems are not related. They do not interact with each other.
1)Villi and micro villi increase the surface area for the absorption of digested food. 2)Epithelial cells lining the intestine have a high volume density of mitochondria, meaning lots of energy for the active uptake of digested food. :)
No
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2 different units and different wiring systems.