The following terms are all components involved in passing a signal along the nervous system.
  coordinator            receptor          response  effector              stimulus      |
State the correct order of components during a nervous response.
State the name of the sense organ that contains receptor cells that respond to changes in light?
Fig. 1Â shows the junction between two neurones.
Fig. 1
State the name of this junction.
Many general anaesthetics inhibit the release of signalling chemicals (called neurotransmitters) across some junctions like the one shown in Fig. 1.
Explain what impact this would have on the nerve impulse.
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