This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Principles of Gastrointestinal Function, Subject name: Physiology
[{'content': 'Inhibition of myenteric plexus results in - \nSelect and explain. \nA. Hyperacidity, B. Diarrhea, C. Decreased gut motility, D. Increased secretions', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Decreased gut motility o The gastrointestinal tract has a nervous system all its own called the enteric nervous system. It lies entirely in the wall of the gut, begining in the esophagus and extending all the way to the anus. The enteric nervous system is composed mainly of two plexus: -Myenteric plexus or Auerbach's plexus : - It is an outer plexus lying between the longitudinal and circular muscle layer. The myenteric plexus controls mainly gastrointestinal motility' therefore, perisalsis requires an active myenteric plexus.Meissner's plexus or submucosal plexus : - It is an inner plexus that lies in the submucosa. The submucosal plexus controls mainly gastrointestinal secretion and local blood flow.", 'role': 'assistant'}]