Neurotransmitters

Axodendritic
1. Axon to dendrite
Neuromuscular
1. Neuron to muscle
Synapse = about 40nm
Pre-synaptic action potential
1. Depolarisation of synaptic terminal
  1. Release of chemical transmitter
    1. Postsynaptic signal
Major neurotransmitters of the brain
1. Glutamate
  1. Excitatory NT
2. GABA
  1. Inhibitory NT
3. Acetylcholine (Ach)
  1. Higher brain function
    1. Memory
  2. First synapses affected during memory loss
  3. Most common in neuromuscular synapses
4. Noradrenaline
5. Dopamine
6. Seratonin
  1. Mood controlling
What criteria define a NT
1. Synthesis
  1. Enzymes present in the nerve terminal
2. Storage
  1. In secretory vesicles
3. Release
  1. Regulated release in to synaptic space
4. Reception
  1. Presence of receptors
5. Removal
  1. A means for terminating the action

Resource summary

	Created by zambrella almost 11 years ago