Biology
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Boundless Biology
Animal Nutrition and the Digestive System
Biology Textbooks Boundless Biology Animal Nutrition and the Digestive System
Biology Textbooks Boundless Biology
Biology Textbooks
Biology

Section 3

Digestive System Processes

Book Version 32
By Boundless
Boundless Biology
Biology
by Boundless
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3 concepts
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Ingestion

The first step to obtaining nutrition is ingestion, a process where food is taken in through the mouth and broken down by teeth and saliva.

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Digestion and Absorption

In order for nutrients (carbohydrates, lipids, vitamins) to be absorbed for energy, food must undergo chemical and mechanical digestion.

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Elimination

Undigested food enters the colon where water is reabsorbed into the body and excess waste is eliminated from the anus.

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