<unk>  receptors are those membrane-bound acetylcholine receptors that are more sensitive to muscarine than to nicotine. Those for which the contrary is true are known as nicotinic acetylcholine receptors. Muscarine and nicotine are both alkaloids. Many drugs and other substances (for example pilocarpine and scopolamine) act as agonists or antagonists of only<unk>  or only nicotinic receptors, making this distinction useful.
Muscarinic acetylcholine receptor
Nicotinic acetylcholine receptor
NMDA receptor
AMPA receptor
Alpha-4 beta-2 nicotinic receptor
Opioid receptor
5-HT receptor
Baroreceptor