Definition of membranous labyrinth
: the sensory structures of the inner ear
First Known Use of membranous labyrinth
Medical Definition of membranous labyrinth
: the system of membrane-lined interconnected sacs and passages that is suspended within the bony labyrinth of the inner ear, is filled with endolymph and surrounded by perilymph, and includes the cochlear duct, utricle, saccule, and semicircular ducts
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