Nervous System and Human Brain

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Across
  1. 4. the lower part of the brain
  2. 6. the part of the eye containing rod and cone cells
  3. 7. nerve endings that branch out of the cell body
  4. 8. the part of the brain responsible for maintaining a constant heart rate
  5. 9. this type of neuron are connected to sensory organs
  6. 10. a sensory nerve contained in the back of the eye used to see colour
  7. 13. the long thin part of a neuron
  8. 14. people with the disease multiple ??? have damaged myelin sheaths
  9. 16. the base of the brain stem where automatic functions are controlled
  10. 17. the type of sheath that insulates the axon
  11. 18. the name for a nerve cell
  12. 19. the largest part of the brain
Down
  1. 1. the name of the chemical message released from the synaptic gap
  2. 2. nerves that receive messages from sensory neurons
  3. 3. what the myelin sheath helps to increase in regard to nerve impulses
  4. 5. this type of neuron carries messages from the CNS
  5. 9. these terminals release chemical messages from neurons
  6. 10. electrical messages are converted into this type of message to cross the synapse
  7. 11. the type of impulses that pass along neurons
  8. 12. a sensory nerved contained in the retina used in low light
  9. 15. the part of the brain that gives us balance