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Surface Area and Diffusion

The small intestine is all about maximizing surface area. The immense amount of folding enables it to be very long meaning more surface area. The villi further increases surface area. They are projections that provide even more membrane surface area that food, while passing through the small intestine, will come in contact with. This contact with the membrane of the small intestine is how absorption occurs. Nutrients that are used in the body will diffuse across the intestinal membrane into the blood stream because the concentration will be high inside the intestine and low in the blood plasma. This difference in concentration is what "drives" diffusion across the membrane.

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โˆ™ 2011-06-05 16:28:33
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Q: How does the villi help the small intestine to absorb sugars quickly?
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What organ has villi to absorb nutrients?

The Small Intestine.Villi lines the wall of the small intestine.IntestineSmall IntestineThe small intestine.


What helps the small intestine?

small intestine helps absorb nutrients


Is morphine absorb in stomach or in small intestine?

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Does the structure of the small intestine help the small intestine absorb nutrients?

yes


What molecules does the small intestine absorb?

small molecules


What structure seen in the frog small intestine helps absorb food?

the small intestine


What is the role of villi in the small intestine?

The role of the villi in the small intestine is to absorb nutrients.


Why is the small intestine important?

the small intestine is small of course and The food that you eat goes to your stomach and it turns into a liquid then it flows to your small intestine. The villi help to absorb the nutrients from the liquified food. Basically, the small intestine helps absorb nutrients from your food.


How does small and big intestine absorb?

They absorb nutrition with healthy bacteria.


How is the small intestine adapted to absorption?

the villi within the small intestine allow it to absorb nutrients


What dose the small intestine do?

absorb nutrients


Why are villi in the small intestine?

to absorb water


Where are the villi that absorb nutrients?

In the small intestine.


What breaks down complex sugars to simple sugars in the mouth and small intestine?

sucrase


Why is the small intestine so long in a fetal pig?

The small intestine is so long in a fetal pig because of nutrient absorption. The longer length helps the nutrition absorb quickly into the lymphatic system and bloodstream.


What are structures in the small intestine?

the tiny structures within the small intestine that absorb nutrients are called Villi


Summarize the functions of the small intestine?

The small intestine functions to absorb vital nutrients into the blood stream


What do villi absorb?

The Villi absorb nutrients while lining the small intestine.


Capilaries in small intestine do what?

Capillaries in the small intestine absorb nutrients from the digestive tract. Capillaries in the small intestine also bring oxygen and carry away waste from the intestine.


Does the liver absorb water?

No it's the small intestine


Does the small intestine absorb protein?

yes


What do the villi in the small intestine do?

They absorb water and nutreints.


What helps absorb food in the small intestine?

villi


What nutrients does the small intestine absorb?

The small intestine absorbs glucose (sugar), fat, starch, and protein before passing it on to the large intestine.


What is the job of a small intestine?

The job of the small intestine is to absorb nutrients from food and send it to the large intestine which dries up excess water.