Across
- 3. part of the nervous system that detects or senses the environment
- 5. gap between two neurons
- 7. photoreceptor in the eye that distinguishes shapes of objects
- 8. automatic movement in response to a stimulus
- 9. -change in an organism’s environment that causes a response
Down
- 1. -relating to material things
- 2. area at the back of the eye that contains photoreceptors
- 4. special structure within the sensory system that detects stimuli
- 5. cord -tubelike structure of neurons
- 6. thin membrane between the outer ear and the inner ear