superior salivatory nucleus

physiology

Written by

The Information Architects of Encyclopaedia Britannica

Last updated

July 14, 2026

Quick Summary

The superior salivatory nucleus is a group of parasympathetic preganglionic neurons located in the brainstem's medulla oblongata. These neurons are part of the parasympathetic nervous system, which primarily controls visceral organs like glands.1

The superior salivatory nucleus sends axons via the facial nerve (cranial nerve VII) to regulate salivary glands. Specifically, these fibers innervate the pterygopalatine ganglion and the submandibular ganglion, which in turn control the lacrimal gland and the submandibular and sublingual salivary glands, respectively. The parasympathetic nervous system, unlike the sympathetic system, is not essential for survival but plays a crucial role in modulating bodily functions.12

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

3 Britannica Sources

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.

human nervous system
Parasympathetic nervous system
…preganglionic neurons belongs to the superior salivatory nucleus and lies in the rostral part of the medullary reticular formation. These neurons send axons out of the medulla in a separate branch of the seventh cranial nerve (facial nerve) called the intermediate nerve. Some of the axons innervate the pterygopalatine ganglion,…
Read More
…preganglionic neurons belongs to the superior salivatory nucleus and lies in the rostral part of the medullary reticular formation. These neurons send axons out of the medulla in a separate branch of the seventh cranial nerve (facial nerve) called the intermediate nerve. Some of the axons innervate the pterygopalatine ganglion,…
Read More