synapses

• synapses:

  found at the junction of each reflex arc

  they are gaps between neurones

  neurones travel across the gaps
• electrical impulse reaches the end of the neurone (before the synapse)

  triggers release of neurotransmitters

  the neurotransmitters diffuse (move against gradient) across the synapse

  neurotransmitters bind to receptors on the next neurone

  presence of neurotransmitters cause production of electrical impulse in next neurone

  cycle repeats
• synapses work via electrical impulses
• synapses transfer information between neurones