Antidepressant drugs

• what do antidepressants treat?

  depression
• what causes depression?

  low levels of serotonin in the synapse
• what drug is commonly used as an antid?

  SSRI's
• what is an SSRI?

  selective serotonin reuptake inhibiter
• how do SSRI's work?

  bind onto serotonin channel on presynaptic neuron so serotonin can't be reabsorbed
• what does the binding of SSRI's to the serotonin channel cause?

  increased amounts of serotonin in the synapse
• what does increased amount of serotonin cause?

  prolonged activity received by post-synaptic neuron