- Scarpa’s Ganglion, also known as the vestibular ganglion, is a ganglion containing the cell bodies of the vestibular nerve (which is a branch of the vestibulocochlear nerve).
- It sits at the bottom of the internal auditory meatus and has two parts, the superior vestibular ganglion and inferior vestibular ganglion.
- The superior vestibular nerve is associated with the superior vestibular ganglion and the inferior vestibular nerve is associated with the inferior vestibular ganglion.
- Nerve endings exit from Scarpa’s ganglion and innerve the vestibular sensory neuroepithelium in the utricle, saccule, and semicircular canals.
- Fibres from the superior vestibular nerve innervate the superior semicircular canal, horizontal semicircular canal, and the utricle.
- Fibres from the inferior vestibular nerve innervate the posterior semicircular canal and the saccule.
- The sensory neuroepithelium in the ampullae of the semicircular canals is located in an area called the crista.
- The sensory neuroepithelium in the utricle and saccule is located in an area called the macula.
Last updated October 08, 2022
