1) Pocket 2) Pouch 3) Utricle 1) Utricle 
• (n.) A little sac, or bag; a utricle; especially, a part of the membranous labyrinth of the ear. See the Note under Ear.
Type: Term Pronunciation: yū′trik′yū-lŭs, -lī Synonyms: utricle, utricle of vestibular labyrinth
One of the two membranous chambers inside the bony vestibule of the inner ear (the other is the sacculus); these chambers contain hair cells and dense crystals called statoconia, both of which are embedded in a gelatinous material that is surrounded by endolymph. The statoconia and hair cells perceive the position of the head with respect to gravit...