Across
- 4. hormones transmitted by the bloodstream
- 5. a change in the environment of an organism
- 6. an example of the endocrine system
- 7. nerve cells
- 10. (hormone) increases rates of blood circulation
- 11. carry out a response
- 12. nerves impulses
Down
- 1. a constant interval environment
- 2. (hormone)controls the level of glucose
- 3. an example of the nervous system
- 8. detects the stimulus
- 9. (hormone)