endolymphatic appendage

endolymphatic diverticulum

a diverticulum of the otic vesicle, which forms the endolymphatic duct and sac. Synonym(s): endolymphatic appendage

en·do·lym·phat·ic di·ver·tic·u·lum

(en'dō-lim-fat'ik dī'vĕr-tik'yū-lŭm) An outgrowth from the otic vesicle that elongates to form the endolymphatic duct and sac.
Synonym(s): endolymphatic appendage.