The Digestive System.

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Presentation transcript:

The Digestive System

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The Digestive System Video http://www.ltscotland.org.uk/glowscience/human_body/digestion/film_184/index.html http://www.brainpop.com/health/bodysystems/digestivesystem/

Why is digestion important? Digestion is the breakdown of big bits of food into small nutrients that can get into our blood.

Visking tubing acts like the intestine wall. Model Gut Experiment Visking tubing acts like the intestine wall. Inside Intestine Blood Tubing: 10 ml Starch Beaker: Water + Iodine

Visking tubing acts like the intestine wall. Model Gut Experiment Visking tubing acts like the intestine wall. Tubing: 10 ml Starch Beaker: Water + Iodine

Inside Tubing / Intestine Starch Outside Tubing / Blood Water + Iodine

Starch is too big to move into blood Inside Tubing / Intestine Starch Outside Tubing / Blood Water + Iodine Starch is too big to move into blood