The defect in achalasia cardia is present in (not related -pathology): (A) Myenteric plexus of Auerbach, (B) Meissner's plexus, (C) Kiesselbach's plexus, (D) Mesenteric plexus
Answer is A. Progressive inflammation and selective loss of the inhibitory myenteric neurons in Auerbach's plexus of the esophagus that normally secrete VIP and nitric oxide- Achalasia