A neuroscience student learns that once a neuron reaches its threshold, it fires at full strength regardless of how strong the triggering stimulus was.
Which principle does this demonstrate?
Reuptake
Depolarisation
The refractory period
The all-or-none principle
Choose your answer
Was this exam question helpful?
A patient is prescribed a medication that increases the availability of dopamine in the synaptic cleft by blocking its reabsorption into the presynaptic neuron.
Which of the following mechanisms does this medication use?
Acting as a dopamine antagonist
Acting as a reuptake inhibitor
Acting as a GABA agonist
Triggering the refractory period
Choose your answer
Was this exam question helpful?
A pharmacologist develops a new drug that binds to serotonin receptors and produces the same effect as naturally occurring serotonin, increasing its overall action in the brain.
Which of the following terms best describes how this drug functions?
As a reuptake inhibitor
As a receptor antagonist
As an inhibitory neurotransmitter
As an agonist
Choose your answer
Was this exam question helpful?