Across
- 1. a reaction to a stimulus
- 5. an event inside the body that causes a response by the body
- 6. system that transports materials thorough out the body
- 7. system that controls and coordinates activates in the body
- 8. system that is in charge of movement inside and outside of the body
Down
- 1. system that brings in oxygen and gets rid of carbon dioxide
- 2. system that provides protection and support
- 3. an event outside the body that causes a response from the body
- 4. system that breaks down food to provide nutrients and energy