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*Inhibitory neurotransmitters are sympathomimetic
*Inhibitory neurotransmitters are sympathomimetic
**Vasoactive intestinal polypeptide (VIP)
**Vasoactive intestinal polypeptide (VIP)
−
**Nitroc oxide (NO)
+
**Nitric oxide (NO)
**ATP
**ATP
**Enkephalins
**Enkephalins
−
*Extrinsic nervous system (ANS)
+
*Extrinsic - Autonomic nervous system (ANS)
**Sympathetic via norepinephrine (A1 and B2)
**Sympathetic via norepinephrine (A1 and B2)
***Thoraco-lumbar innervation
***Thoraco-lumbar innervation