Across
- 1. Sugar found in the bloodstream
- 3. Hormone that regulates the sleep cycle
- 7. Hormone that increases hunger
- 9. Organ that controls thoughts and body functions
- 10. Brain chemical linked to motivation and reward
Down
- 2. Natural state of rest for the body
- 4. Hormone that controls blood sugar
- 5. rhythm Body’s internal clock that follows a ~24-hour cycle
- 6. What the body uses for activity and metabolism
- 8. Chemical messenger in the endocrine system