Are villi helpful in good absorption?

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Solution

How Do Villi Absorb Nutrients?
When food is broken down in the stomach, it forms a substance called chyme, which is a slurry of nutrients. When that slurry passes into the small intestine, it comes into contact with the villi. The carbohydrates and proteins in the chyme enter the bloodstream passively via the vein and artery. The fat is absorbed by the lacteal into the lymphatic system, which eventually empties into the bloodstream. In a process called active transport, specialized intestinal cells of the villi allow the passage of B-12, iron and calcium into the bloodstream.

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The small finger-like projection called villi present in the _______ helps in absorption of nutrients.

Q. The small finger-like projection called villi present in the helps in absorption of nutrients.

Q. Assertion- The cells lining the villi help in absorption.
Reason- The cells lining villi have numerous microscopic projections which increase the surface area enormously.

Q. State whether the following statements are true or false.
Statement 1- Villi are the finger-like projections present in the inner lining of the large intestine.
Statement 2- Villi helps to increases the surface area for absorption.

In the chapter on nutrition, you learnt that the small intestine contains villi which help in the absorption of nutrients. Where do the nutrients go after absorption?

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