Nervous and Endocrine Systems

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Across
  1. 3. Organs which produce chemicals.
  2. 4. Connects the nervous system to the endocrine system.
  3. 6. A nervous response that causes increased activity.
  4. 11. The maintaining of a constant internal environment in an organism.
  5. 14. The system that carries hormones around the body.
  6. 16. The part of the nervous system that controls the body's internal environment.
Down
  1. 1. Also known as the master gland.
  2. 2. A nervous response that stops a response.
  3. 5. A type of neuron that sends messages to the central nervous system.
  4. 7. Chemicals which cause specific tissues to respond.
  5. 8. A nerve cell.
  6. 9. The part of the nervous system that monitors the external environment.
  7. 10. A change that brings on a response.
  8. 12. Carries messages to effector tissue.
  9. 13. A part of the central nervous system.
  10. 15. Changes are detected by this.