Osmosis video - Adrenergic antagonists: Presynaptic

Adrenergic antagonists are a type of drug that blocks the action of certain neurotransmitters, such as adrenaline. They work by preventing the release of stored neurotransmitters from the presynaptic neuron. This reduces the number of available neurotransmitters at the synapse and prevents them from binding to and activating postsynaptic receptors. This ultimately reduces the excitatory response of the neuron and results in a decrease in nerve activity.