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Therefore the ENS provides the GI tract with a certain degree of self-regulation, although most of these short reflex arcs provide a stimulatory influence, utilising acetylcholine. Some inhibitory reflexes do exist within the ENS including sphincter relaxation.  
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Therefore the ENS provides the GI tract with a certain degree of self-regulation, although most of these short reflex arcs provide a stimulatory influence, utilising acetylcholine. Some inhibitory reflexes do exist within the ENS including sphincter relaxation.
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===GI Tract: Long Reflex Arcs===
 
===GI Tract: Long Reflex Arcs===
 
Within the PNS, activity in the GI tract is also regulated via longer reflex arcs that are made up of preganglionic parasympathetic fibres from the CNS.  
 
Within the PNS, activity in the GI tract is also regulated via longer reflex arcs that are made up of preganglionic parasympathetic fibres from the CNS.  
 
[[Category:Nervous System - Anatomy & Physiology]]
 
[[Category:Nervous System - Anatomy & Physiology]]
 
[[Category:To Do - A&P]]
 
[[Category:To Do - A&P]]
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