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

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