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1. Peristalsis

   Linked via "Parasympathetic Stimulation"

   The $\text{CNS}$ exerts top-down control, influencing the baseline excitability of the $\text{ENS}$:
   Parasympathetic Stimulation (Vagal Input): Generally enhances peristalsis. Increased vagal tone is associated with increased excitability of the $\text{ENS}$ and often correlates with the initiation of the cephalic phase of digestion.
   Sympathetic Stimulation: Generally inhibits or slows peristalsis. Intense sympathetic discharge, such a…