Nerve Plexuses Present in the GIT 1. Myenteric Plexus (Auerbach’s plexus) Location: Between the circular and longitudinal layers of muscularis externa Function: Controls motility of the gut Regulates peristalsis Controls muscle tone and coordination Clinical note: Affected in achalasia and Hirschsprung disease 2. Submucosal Plexus (Meissner’s plexus) Location: In the submucosa Function: Controls secretion Regulates local blood flow Influences absorption One-Line Exam Answer Two nerve plexuses are present in the GIT: Myenteric (Auerbach’s) plexus and Submucosal (Meissner’s) plexus. Quick Handwritten-Style Memory Table Myenteric (Auerbach) → Movement Submucosal (Meissner) → Secretion