synaptic transmission

• summation:

  • levels of neurotransmitter affect neurond some excitory/ inhibitory and it affects whether the neuron fires
  • total influence excitatory next neuron fire
  • total influencce inhibitory next neuron not fire
• excitation and inhibitation:

  • excitation uses adrenaline causing the neuron to communicate with fire impulse
  • inhibitatory uses serotion to stop the neuron from firing
• process:

  • action potential travels down axon and reaches presynaptic terminal triggers release neurotransmitters from synaptic vesicle
  • neurotransmitter crosses synapse from vesicles to next neuron
  • neurotransmitter combine with postsynaptic receptor sitre on dendrite of next neuron
  • chemical message converts back back to electrical and process of synaptic transmission repeats again
  • stimulation of postsynaptic receptors by neurotransmitteres excitation or inhibition