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What do Villi in the lungs pickup?

Dirt and contaminants from the inspired air.


In which part villi is present?

Villi are present in the small intestine, specifically in the inner wall of the small intestine called the mucosa. They are small, finger-like projections that increase the surface area for absorption of nutrients from digested food.


What type of epithelium is present in villi?

right atrium


What do the alveoli of the lungs the microvilli and villi in the intestine and the gill lamellae in fishes gills have in common?

The microvilli and villi in the intestine increase the absorbent surface where nutrients are transported into the blood. The alveoli in the lungs and gill lamellae bring oxygen in the air and water to the bloodstream,


What does villi do in the body?

In the intestinal wall, the villi (with micro-villi on them) are used to increase the surface area (just like the inside of your lungs do). This means that in the relatively small space, a lot of the nutrients in the food you eat can be absorbed by them and then diffused into the blood stream.


Why are the lungs and the small intestines lined by a very large number of capillaries?

the small intestine is lined with villi


Are villi present in the duodenum jejunum ileum?

Yes, villi are present in all three. Small soluble food molecules broken down by enzymes in bile (which is released in the ileum) are absorbed by the villi in the ileum. Water molecules are absorbed by villi in the duodenum (large intestines) by active transport - not osmosis, against a concentration gradient.


Where are villi present in the human body and what are their functions?

Villi are largely present in the lower digestive tract. Their function is not only to absorb the digested foodstuffs but also they greatly increase the surface area for absorption.


Villi are present in small intestine why?

Vili are present to increase the surface area of the small intestine. This allows more digestion to happen in the small intestine.


What structure enables the small intestine to absorb large amounts of nutrients?

villi


How is the small intestine adapted to absorb the nutrients?

it is adapted to absorbing nutrients due to the villi present in the small intestine.


What are the three types of villi?

The three types of villi are: Intestinal villi-microscopic finger like projections on the inner surface of the ileum. Chorionic villi-villi on the outermost membrane of the foetus. Arachnoid villi-villi on the arachnoid membrane of the brain.