Endolymphatic sac
System
Sensory (Ear)
SNOMED CT
279810008
Endolymphatic sac
Definition
From the posterior wall of the saccule a canal, the ductus endolymphaticus, is given off; this duct is joined by the ductus utriculosaccularis, and then passes along the aquaeductus vestibuli and ends in a blind pouch, the endolymphatic sac, on the posterior surface of the petrous portion of the temporal bone, where it is in contact with the dura mater. Studies suggest that the endolymphatic duct and endolymphatic sac perform both absorptive and secretory, as well as phagocytic and immunodefensive,functions . [WP,unvetted].
Also known as saccus endolymphaticus — per UBERON
The Endolymphatic sac is a part of the Sensory (Ear).