IN & OUT
Everyone loves to sit down to a good meal. Did you know that your digestive system doesn’t help you eat? It helps you digest! (It’s not called the eating system, after all.) Seventh grade discovered some gastrointestinal knowledge in this chapter: both mechanical and chemical digestion are required to churn all that stuff you ate into a soupy mixture so that the nutrients can be absorbed into your blood. The blood also carries liquid waste that needs to be filtered. If the kidneys didn’t exist, your blood would be toxic! If you couldn’t sweat, how would you effectively cool down? Think about it!
Miss Kleinschuster
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