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Investigation 7.1
Where, O' Where is the Air? |
Remember when we learned about the digestive system? Did we discover that the air and food both went down the same tube? |
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In your lab book is a drawing similar to the one you drew the digestive system on. See if you can make a detailed drawing on the ones in your lab book of the air going from the mouth and nose into the body. What path does it take? |
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Remember our discussion about choking? Does this help you identify where the air and food go? |
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Share your drawing with your group. |
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How many people in your group have one tube? |
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Try to come up with a group model that you can share with the rest of the class. Be sure that everyone in your group can defend and explain your group model. |
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Now share with the class as your teacher directs. Your teacher will ask you specific questions such as those listed below to help you clarify your model. |
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If we only had one tube carrying food and air, wouldn't a lot of air go into the stomach? What effect would this have on how much food we could eat? |
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