Reflex arc

• How are impulses transmitted at the synapse?

  • Impulse stimulates the release of chemicals
  • The chemical diffuses across the synapse
  • Binds to receptors to stimulate an electrical impulse in the next neurone
• List the order of the reflex arc:

  • Stimulus
  • Receptors
  • Sensory neurone
  • CNS + relay neurone
  • Motor neurone
  • Effectors
  • Response