The Digestive System Lesson 2

What is Digestion?

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Digestion is a process that breaks down the food you eat into smaller substances that your body can use and absorb. It is like burning fuel.

Digestion breaks down food physically and chemically. The teeth and tongue break the food down by chewing it; it breaks it down physically. Chemicals produced by glands break down food even more into nutrients; it breaks it down chemically.

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Nutrients is any substance that is found in food that your body can use. The nutrients goes through the digestive system into the blood vessels in the circulatory system. It is carried by the blood to the cells, and the cells get the energy from the nutrients. The energy helps grow, develop, and preform daily activities.