Colonic Smooth Muscle (Parasympathetic Nerve Stimulation)

Colonic smooth muscle, under parasympathetic nerve stimulation, is responsible for generating contractions that facilitate the propulsion and mixing of colonic contents. The primary neurotransmitter involved is acetylcholine, acting on M3 muscarinic receptors to increase smooth muscle tone and phasic contractile activity. This system plays a crucial role in normal colonic motility and is implicated in various gastrointestinal disorders.

Other names

Colon smooth muscleColonic motilityParasympathetic regulation of colon

Parasympathetic nerve stimulation increases colonic smooth muscle contraction via acetylcholine release, acting on M3 muscarinic receptors and downstream signaling pathways involving increased intracellular calcium and PKC activation.