Across
- 3. opening at center of iris
- 6. regulation of water in the body
- 9. they stay for weeks and affect the organs
- 11. regulation of the body's internal conditions
- 12. allows your body to use glucose for energy
- 13. allows you to hear
- 14. the thing that happens after effector
Down
- 1. what are the balls that carry information across the synapse
- 2. transparent part of the eye
- 4. when the plant grows toward light
- 5. makes your heart beat faster and your lungs more efficient
- 7. when the plant grows toward or away from gravity
- 8. the neurone that carries electrical impulses from the CNS to effectors
- 10. the neurone that detects stimulus
- 15. a change in environment of organism