psychology unit 2

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Across
  1. 2. decreases availability of a neurotransmitter
  2. 6. chemical messengers that are secreted into the bloodstream
  3. 8. contains the brain and spinal cord
  4. 9. insulates axon and speeds neural impulses
  5. 10. increases availability of a neurotransmitter
  6. 13. these neurons help with movement; efferent neurons
  7. 15. contains autonomic and somatic nervous systems
  8. 17. afferent neurons
  9. 18. part of the central nervous system, also a part of the spine
  10. 19. base building block of the nervous system
  11. 20. regulates key involuntary functions of the body
Down
  1. 1. neurons that send signals towards the central nervous system
  2. 3. chemical messenger that carries messages between neurons
  3. 4. system that chemically controls various functions of cells, tissues, and organs
  4. 5. division of the peripheral nervous system that controls the skeletal system
  5. 7. cell body
  6. 11. neurons that send signals away from the central nervous system
  7. 12. these make up the endocrine system; they produce and secrete hormones
  8. 14. the study of the brain
  9. 16. neurons that connect within the central nervous system