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acetylcholine receptor |
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acetylcholine receptor [ə‚sed·əl ′kō‚lēn ri‚sep·tər] (cell and molecular biology) A receptor in the membranes of certain cell structures, such as synapses or the neuromuscular junction, to which the transmitter substance acetylcholine binds. Nicotinic acetylcholine receptors are gated ion channels that open in response to acetylcholine, leading to an increase in membrane conductance; muscarinic acetylcholine receptors are G-protein-linked receptors inducing membrane ion channel changes or intracellular processes such as smooth muscle contraction. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 3]H]nicotine binding to a nicotinic cholinergic receptor on PC12 cells. Muscarinic cholinergic receptors in area postrema and brainstem areas regulating emesis. Similarly, medications that stimulate the cholinergic receptors are referred to as parasympathomimetics (cholinergic), and those that inhibit cholinergic receptors are called parasympatholytics (anticholinergic). |
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