Glossary Search for sacculus (Search Options)
Definition of Term
The middle and largest chamber of the inner ear, between the utriculus and the lagena, the other two chambers. It has a wide connection to the upper part of the labyrinth in Petromyzontiformes, cartilaginous fishes and primitive bony fishes but in advanced teleosts the connection is narrow and, exceptionally, it is completely separate, e.g. in Aplodinotus. Contains the otolith called the sagitta or sacculolith. Also called saccule.
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