ORAL PATHOLOGY: salivary glands innervation

Autonomic Innervations

Parasympathetic Stimulation results in abundant, watery saliva with a decrease in amylase in saliva and an increase in amylase in the serum.
Parasympathetic Interruption to salivary glands results in atrophy, while sympathetic interruption doesn’t cause a signifiant change.
Parasympathetic Innervation In the case of the parotid, parasympathetic fibers originate from CN IX .In the case of the Submandibular and Sublingual glands, the parasympathetic fibers originate in CN VII. 

Sympathetic Innervation Stimulation by the sympathetic nervous system results in a scant, viscous saliva rich in solutes with an increase in amylase in the saliva and no change in amylase in the serum. For all of the salivary glands, these fibers originate in the Superior Cervical ganglion and travel with arteries to reach the glands: 1) External Carotid artery for the Parotid 2) Lingual artery for the Submandibular, and 3) Facial artery in the case of the Sublingual.