How Does The Sympathetic Nervous System Affect The GI Tract?

How Does The Sympathetic Nervous System Affect The GI Tract? The sympathetic nervous system exerts a predominantly inhibitory effect upon GI muscle and provides a tonic inhibitory influence over mucosal secretion while, at the same time, regulates GI blood flow via neurally mediated vasoconstriction. How does the sympathetic nervous system affect the digestive system? In