1.11 absorption in the small intestine

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8 Terms

1
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What is absorption?

The movement of digested, soluble food molecules into the bloodstream.

2
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Where does absorption take place?

In the small intestine.

3
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What are villi?

Finger-like projections lining the small intestine.

4
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Why do villi increase the rate of absorption?

They increase the surface area.

5
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What is the function of the capillaries in a villus?

To absorb glucose and amino acids into the blood.

6
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What is the function of the lacteal in a villus?

To absorb fatty acids and glycerol into the lymphatic system.

7
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How is the small intestine adapted for absorption?

It has a large surface area, a thin wall and a good blood supply.

8
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Draw and label a villus

Villus, capillaries, lacteal, thin epithelium.