Across
- 3. Cells that help you see in dim light
- 5. Branch-like structure that receives signals
- 6. Output channel that releases neurotransmitters
- 8. When the inside of a neuron becomes more positive
- 9. Structure that changes shape to focus near and far objects
- 10. A cell that sends and receives messages in the body
Down
- 1. Receptor that responds to chemicals
- 2. Cells that detect color and detail
- 4. Taste hairs that act as receptors
- 7. Chemical messengers that carry signals between neurons