Vasoactive intestinal peptide (VIP), present in the myenteric plexus, is involved in smooth muscle relaxation and acts as an anti-inflammatory cytokine.
Vasoactive intestinal peptide (VIP) is a regulatory neuropeptide involved in a wide variety of functions, among them vasodilation, smooth muscle relaxation, sweat secretion, gastrointestinal peristalsis, and pancreatic function.