Nicotinic receptors are seen in all except:September 2007: (A) Neuromuscular junction, (B) Autonomic ganglia of autonomic nervous system, (C) Bronchial smooth muscle, (D) Brain
Answer is C. Ans. C: Bronchial Smooth MuscleThe nicotinic cholinergic receptors are found in the neuromuscular junctions of somatic muscles; stimulation of these receptors causes muscular contraction. They are also found in the autonomic ganglia of autonomic nervous system andcentral nervous systemMuscarinic receptors are found in:M 1-brain M 2-heaM 3-smooth muscleM 4-smooth muscle, pancreatic acinar and islet tissue