Innervation Of The Gastrointestinal Tract

Esophagus Enteric Neurons

Extrinsic innervation of the GI tract is provided by both the parasympathetic and sympathetic systems. Together with the enteric or intrinsic nervous system, they make up the autonomic nervous system. The innervation of the GI tract is referred to as autonomic because we are unaware of its activities and have no conscious control over the functions it regulates. Down to the level of the transverse colon, parasym-pathetic innervation to the GI tract is supplied by the vagus nerve. The pelvic...