Across
- 6. An organ that acts in response to a stimulus
- 7. A part of the body that detects stimuli
- 10. A cell that detects chemical changes in damaged cells
- 12. Tissue in the eye that contains receptor cells for light
- 14. Something an organism's nervous system can detect
- 15. The part of a neuron that contains the nucleus
- 16. Part of a neuron that receives messages from other neurons
- 17. Tissue in the nose that contains receptor cells for smell
- 19. A cell that detects temperature changes
- 20. A cell that detects chemicals such as tastes and smells
- 22. the gap between neurons where signals are sent from one to the other
- 24. A cell that sends messages within the central nervous system
Down
- 1. A cell that detects light
- 2. All of the nerves extending from the brain and spinal cord
- 3. A small pulse of electrical current that flows through a neuron
- 4. A cell that sends messages from receptors to the central nervous system
- 5. A cell that transmits electrical impulses
- 8. The part of the nervous system that determines responses to a stimulus
- 9. A cell that detects touch, pressure, sound and motion
- 11. A bundle of fibres made up of neurons
- 13. A cell that sends messages from the central nervous system to an effector
- 18. the part of a neuron that carries impulses to other neurons
- 21. nervous system The brain and spinal cord
- 23. The body system that senses the environment and controls actions