Synaptic transmission

• What are neural networks?

  groups of neurons communicating
• what happens when impulse reaches the presynaptic terminal?

  it triggers the release of neurotransmitters from synaptic vesicles
• what are neurotransmitters?

  chemicals that diffuse across synapse to the next neuron
• once neurotransmitter crosses the synapse, what is it taken up by?

  postsynaptic receptor site
• where is acetylcholine found?

  each point where a motor neuron meets a muscle
• what happens upon acetylccholines’ release?

  muscles contract
• what neurotransmitter causes inhibition?

  serotonin
• how does serotonin work?

  becomes more negatively charged and less likely to fire
• which neurotransmitter causes excitation?


  adrenaline
• how does adrenaline produce excitation?

  increases positive charge of the post-synaptic neuron and making it more likely to fire