String theory
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chantel0216
What is the inner surface of the small intestine that is coverd with folds called
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replied to:  chantel0216
junheng11
Replied to:  What is the inner surface of the small intestine that is...
The small intestine is not covered with "folds" . There are tiny hairs in the intestine called villi. The villi is to absorb the nutrients in the digested food.


Maybe it is your intestine that has flab's as it is too fat.
(Just Kidding!)

Im back........
12 yrs-- Junheng
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robertr82
Replied to:  What is the inner surface of the small intestine that is...
ViIntestinal villus
From Wikipedia, the free encyclopedia
Intestinal villus
Micrograph of the small intestine mucosa showing intestinal villi - top half of image. H&E stain
Section of duodenum of cat. X 60.
Latin villi intestinales Gray's subject #248 1174
Intestinal villi (singular: villus) are tiny, finger-like projections that protrude from the epithelial lining of the intestinal wall. Each villus is approximately 0.5-1.6 um (micrometres) in length and has many microvilli (singular: microvillus), each of which are much smaller than a single villus. Intestinal villi should not be confused with the larger folds of mucous membrane in the bowel known as the plicae circulares. A villus is much smaller than a single fold of plicae circulares. Villi increase the surface area of the intestinal wall. Increased surface area allows for increased intestinal wall area that is available for absorption. Increased absorptive area is useful because digested nutrients (including sugars and amino acids) pass into the villi through diffusion, which is effective only at short distances. In other words, increased surface area (in contact with the fluid in the lumen) decreases the average distance traveled by nutrient molecules, so effectiveness of diffusion increases. Circulating blood then carries these nutrients away.[1]
sit wikipedia see villi....
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