Enteric nervous system
I made this separate because it's a bit wordy for a single page
location
myenteric (Auerbach) plexus
between longit and circular layers of muscle
submucosal (Meissner) plexus
submucosa. what did you think
function
Both get parasym and sympathetic input
| Myenteric | Submucosal |
|---|---|
| control muscle activity along length of gut stimulation causes: (1) ↑ tone (2) increased intensity of the rhythmical contractions; (3) slightly increased rate of the rhythm of contraction; and (4) faster movement of the gut peristaltic waves (Guyton) control local mucosal activity - secretion, absorption and contraction of submucosal muscle l |
Controls GI secretion and blood flow |
pathology
- agenesis of ganglion cells = Hirschsprung disease = tonic contraction of lumen = functional obstruction