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The Digestive System

The Digestive System. SNC 2P1. Processes of the Digestive System. Ingestion: Food is taken into the body Digestion: Food is broken down into nutrients. Physically - dissolving and breaking into smaller bits Chemically - broken down through chemical reactions

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The Digestive System

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  1. The Digestive System SNC 2P1

  2. Processes of the Digestive System Ingestion: Food is taken into the body Digestion: Food is broken down into nutrients. • Physically- dissolving and breaking into smaller bits • Chemically- broken down through chemical reactions Absorption: nutrients diffuse/move into the blood. Energy from these nutrients is then given to the cells through cellular respiration Elimination: Solid waste then passes out of the system.

  3. Ingestion happens as food enters mouth. Digestion begins with chewing as the teeth, tongue and saliva break down food. The esophagus pushes food down into the stomach, through muscular contractions. These contractions push the food all the way through the digestive system. Stomach muscles contract to mix the food. Stomach acids and chemicals break down the food. Digestion continues in the small intestine. Nutrients are absorbed into the bloodstream. Undigested food moves into the large intestine, where water and nutrients are reabsorbed. Undigested material is called feces and is passed out of the body.

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