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Cholinergic Nerve Endings
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- extrinsic parasympathetic and intrinsic
- essential for maintenance of normal motiliy pattern
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| Adrenergic Nerve Endings |
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- entirely extrinsic
- generally relax GIT by the inhibitory effect of noradrenaline
on the neurones of the enteric system
- strong sympathetic stimulation can block movement
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Non-Adrenergic, Non-Cholinergic (NANC) Nerve Endings
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- enteric ganglia mainly secrete Vasoactive Intestinal
Peptide (VIP), Nitric oxide
- relax smooth musculature of intestinal tract below
bolus of food
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