Complex sentence: Nicotinic acetylcholine receptors (nAChR) are receptors found in the central nervous system, the peripheral nervous systems (PNS), skeletal muscles and are ligand-gated ion channels with binding sites for acetylcholine as well as other agonists.
Split into simpler sentences: Nicotinic acetylcholine receptors are receptors found in the central nervous system, the peripheral nervous systems (PNS) and skeletal muscles. They are ligand-gated ion channels with binding sites for acetylcholine as well as other agonists.