Innervation of the GI tract Flashcards
1
Q
What is meant by extrinsic and intrinsic innervation of the Gi tract?
A
Extrinic innveration involves receiving motor impulses from the CNS and sending sensory information back.
Intrinsic innervation involves the regulation of the activities of the digestive tract by a self-sufficient network of sensory and motor neurons (enteric NS)
2
Q
Role of the enteric nervous system
A
Enteric nervous system consists of two interconnected plexuses in the walls of the GI tract (myenteric and submucosal). These control the coordinated contraction and relaxation of intestinal smooth muscle and regulate gastric secretion and blood flow.
