Post and presynaptic receptors

Post and presynaptic receptors

Some people think of receptors as only sitting on a cell of a target tissue (for example on the post-synaptic neuron of a synapse).

But it is important to realize that the target cell can also be found pre-synaptically, helping to regulate the output of a cell. These are sometimes called autoreceptors.

1

Alzheimer's disease is characterized by a shortage of acetylcholine in the synaptic cleft, or a shortage of acetylcholine neurons. Which of the following drug mechanisms is a potentially useful medicine against Alzheimer's disease?