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12. Coordination and Control                                                                         eLearn.Punjab

                                                               Figure 12.10: Structure of human ear

C- Inner Ear

Inner ear consists of three parts i.e. vestibule,
semicircular canals and cochlea. Vestibule is
present in the centre of inner ear. Three canals
called semicircular canals are posterior to the
vestibule. The cochlea is made of three ducts
and wraps itself into a coiled tube. Sound
receptor cells are present within the middle duct
of cochlea.

                                            Figure 12.11: Structure of Inner ear

To which part of ear the tympanum belongs?

External Ear

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