Chapter 2: Nutrients in Animals

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Nutrition in Animals


What are villi? What is their location and function?


The inner walls of the small intestine have thousands of finger-like outgrowths, these are called villi. The villi increase the surface area for absorption of digested food. The digested food materials are now transported via blood vessels to different parts of the body. This food is used for energy, growth, and repair. This is called assimilation.

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