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Definition
 
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labyrinth definition: internal ear; the essential part of the organ of hearing, consisting of an osseous and a membranous portion.
Internal Ear definition: The portion of the ear located within the temporal bone that is involved in both hearing and balance and includes the semicircular canals, vestibule, and cochlea. (from American Heritage Dictionary online)
Ear, Inner definition: The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrinthine and the membranous labyrinth. The bony labyrinth is a complex of three interconnecting cavities or spaces (COCHLEA; VESTIBULAR LABYRINTH; and SEMICIRCULAR CANALS) in the TEMPORAL BONE. Within the bony labyrinth lies the membranous labyrinth which is a complex of sacs and tubules (COCHLEAR DUCT; SACCULE AND UTRICLE; and SEMICIRCULAR DUCTS) forming a continuous space enclosed by EPITHELIUM and connective tissue. These spaces are filled with LABYRINTHINE FLUIDS of various compositions.
Membranous labyrinth definition: Organ with organ cavity which consists of the vestibular labyrinth and the cochlear labyrinth. Examples: There are only two membranous labyrinths, the right and the left.
labyrinthine membrane definition: system of communicating epithelial sacs and ducts lodged within the osseous labyrinth but separated from the major portion of the bony labyrinth by the perilymphatic space; contains the endolymph.
Membranous labyrinth definition: Organ with organ cavity which consists of the vestibular labyrinth and the cochlear labyrinth. Examples: There are only two membranous labyrinths, the right and the left.
vestibular apparatus definition: structures of the inner ear concerned with reception and transduction of stimuli of equilibrium; they include the semicircular canals, the utricle, and the saccule.
Vestibule, Labyrinth definition: An oval, bony chamber of the inner ear, part of the bony labyrinth. It is continuous with bony COCHLEA anteriorly, and SEMICIRCULAR CANALS posteriorly. The vestibule contains two communicating sacs (utricle and saccule) of the balancing apparatus. The oval window on its lateral wall is occupied by the base of the STAPES of the MIDDLE EAR.