<prompt> Ligand-gated ionic channel?VIP receptorGAB AA receptorNorepinephrine receptorGABAB receptor  <response>: Ans. b GABAA receptor Ref. Ganong Physiology 22ndChapter 1 and Fig. 1-29Receptor with Intrinsic Ion Channel: 1. GABA-A, 2. Nicotinic cholinergic, 3. NMDA, and 4. 5-HT3 receptors.GABA receptors LocationDrugs which bind them GABA-A receptorNeuronal membranes in CNSBenzodiazepinesBarbituratesZolpidem and many othersGABA-B receptorsCoupled to G proteins that either inhibit Ca channels or activate K channelsSelectively activated by Baclofen 