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The Endocrine System |
| edHelper's suggested reading level: | grades 5 to 7 | |
| Flesch-Kincaid grade level: | 7.84 |
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The Endocrine System
By Jennifer Kenny |
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1 When you think of a system in the body that responds to stimuli, you think of the nervous system. In its own way, the endocrine system responds as well. Instead of electrical messages, though, it sends messages using chemicals.