Lesson 2 of 17
One path, and a job at every stop
Show on a big screenFood goes in at one end. It follows one path. Swap the cards until the stops are in order.
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The idea
The path runs through the alimentary canal, the long food tube. The liver and the pancreas add digestive juices to the small intestine. A digestive juice is a liquid that helps digest food. Saliva is the digestive juice in the mouth. Starch is a food part in rice and roti. Stool is the food waste that leaves the body.
| Stop | Job |
|---|---|
| Mouth | Teeth crush food. Saliva starts on starch |
| Food pipe | A wave of squeezing pushes food down |
| Stomach | Churns food. Juice works on protein |
| Small intestine | Digestion finishes. Food passes into the blood |
| Large intestine | Takes back water and some salts. Waste becomes stool |
| Anus | The stool leaves |
Step 1 of 6
- The path: mouth, food pipe, stomach, small intestine, large intestine.
- Mouth: chews food and mixes it with saliva.
- Food pipe: pushes it down in a wave.
- Stomach: churns it. Most food does not cross into the blood here.
- Small intestine: finishes it. Most crosses in here.
- Large intestine: takes back water. What is left leaves.
Food takes one path. It goes mouth, food pipe, stomach, small intestine, large intestine, anus.
Try the lab to finish this lesson.