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The inner ear is composed of a bony portion (cochlea, vestibule, and three semicircular canals) and a membranous part, which are contained in the petrous portion of the temporal bone (Figure 30.3). During this dissection, only random transverse sections through the superior semicircular canal and the vestibule will be observed. The membranous part is further divided into the cochlear duct and vestibular system (Figure 30.4).

Links and References:
Grant's: 7.137, 7.138, 7.139, 7.140, 7.144, 7.145
Netter: 87, 88, 89
Rohen/Yokochi: 118, 122, 124