The central duct of the cochlea in the inner ear, containing the sensory cells and separated from the scala tympani and scala vestibuli by membranes.
- ‘Inside the lagena, another membrane runs the length of the scala media.’
- ‘This ensured that the ionic environment of the scala media was not disturbed by influx of tissue culture medium.’
- ‘However, unlike the present study, measurements in that study were performed with ruptures in Reissner's membrane, which may have produced alterations in the ionic environment in scala media.’
Late 19th century: from Latin, literally middle ladder.