synapse and the nervous system

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Across
  1. 4. sends electrical impulses from the receptor to the brain
  2. 6. environmental changes that our bodies respond to
  3. 7. the time taken for a person or system to respond to a given stimulus or event
  4. 8. the nerve pathway involved in a reflex action
Down
  1. 1. carry electrical impulses from the central nervous system to the effector/muscles
  2. 2. the connection between two neurones
  3. 3. the process where chemicals travel between synapses
  4. 5. signals that travel through axons