Difference between revisions of "Villi"
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[[Villi]] are small folds in the wall of the [[Small Intestine|small intestine]] that increase its [[Surface Area|surface area]]. | [[Villi]] are small folds in the wall of the [[Small Intestine|small intestine]] that increase its [[Surface Area|surface area]]. | ||
− | Singular [[Noun]]: '''Villus''' | + | : Singular [[Noun]]: '''Villus''' |
− | Plural [[Noun]]: '''Villi''' | + | : Plural [[Noun]]: '''Villi''' |
===Adaptations of Villi=== | ===Adaptations of Villi=== |
Revision as of 16:35, 14 September 2018
Key Stage 3
Meaning
Villi are small folds in the wall of the small intestine that increase its surface area.
Adaptations of Villi
- Villi have a wall only one cell thick so the [nutrient]]s only have a short distance to diffuse into the blood.
- Villi capillaries inside them for a good blood supply to allow for quick diffusion into the blood.
- Villi have a large surface area to allow quicker diffusion.
- The cells in the walls of the villi have microvilli to provide an even bigger surface area for quicker diffusion.
About Villi
- Villi cover inside of the small intestine.
- Villi increase the surface area of the small intestine.