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4. The organ inside the head that controls all body functions of a human being.
8. How the body reacts to maintain stability.
9. The breakdown of food into smaller components that can be absorbed into the bloodstream.
10. A reaction that helps regulate your body temperature especially when weather is hot.
11. Muscular organ that pumps blood through the body.
12. A feedback that occurs in nature when the product of a reaction leads to an increase in that reaction.

1. A disease that occurs when your blood glucose, also called blood sugar, is too high.
2. This system sends messages back and forth between the brain and the body.
3. A reaction which your body does to help yourself cooldown.
5. System The network of organs and tissues that help you breathe and exchange gasses.
6. A feedback that occurs when the product of a reaction leads to a decrease in that reaction.
7. Channels that carry blood throughout your body.