This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Small intestinal peristalsis is controlled by : \nSelect and explain. \nA. Myentric plexus, B. Meissners plexus, C. Vagus nerve, D. Para sympathetic system', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Myenteric (Auerbach&;s) plexus is situated b/w and innervates outer longitudinal & middle circular muscular layers and is primarily concerned with motor controlQ. Submucosal (meissner&;s) plexus situated between middle circular layer and mucosa is primarly concerned with control of intestinal secretionQ as it innervates glandular epithelium, intestinal endocrine cells & submucosal blood vessels. Ref: Guyton 12th Ed.', 'role': 'assistant'}]