Infection of CNS spreads in inner ear through
Ans. A Cochlear aqueductAs we know that cochlear aqueduct (Aqueduct of Cochlea) is a connection between scala tympani (containing perilymph) and the subarachnoid space (containing CSF). On occassions, paicularly in young children, the Cochlear aqueduct is large and open.Infection can spread to the inner ear from the infected CSF or vice versa, the cochlear aqueduct resulting in severe profound hearing loss (meningitic labyrinthitis).
Cochlear aqueduct
Endolymphatic sac
Vestibular aqueduct
Hyle fissure