Anatomy and Course
- The carotid sinus nerve runs downward anterior to the internal carotid artery.
- It communicates with the vagus nerve and sympathetic trunk.
- It divides in the angle of the bifurcation of the common carotid artery.

Innervation
- The carotid sinus nerve innervates the carotid body.
- It also innervates the carotid sinus.

Function
- The carotid sinus nerve conveys information from the baroreceptors of the carotid sinus, mediating blood pressure homeostasis.
- It also conveys information from the chemoreceptors of the carotid body, providing information about the partial pressures of blood oxygen and carbon dioxide.

References
- Incorporates text in the public domain from page 909 of the 20th edition of Gray's Anatomy (1918).
- External link: Cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University).
- External link: Cranial Nerves. Yale School of Medicine. Archived from the original on 2016-03-03.

Carotid sinus nerve (Wikipedia)

The carotid branch of the glossopharyngeal nerve (carotid sinus nerve or Hering's nerve) is a small branch of the glossopharyngeal nerve (cranial nerve IX) that innervates the carotid sinus, and carotid body.

Branch of glossopharyngeal nerve to carotid sinus
Hypoglossal nerve, cervical plexus and their branches (nerve not labeled, but region is visible)
Details
From	Glossopharyngeal nerve
Identifiers
Latin	Ramus sinus carotici nervi glossopharyngei
TA98	A14.2.01.146
TA2	6327
FMA	53488
Anatomical terms of neuroanatomy [edit on Wikidata]