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12 Cards in this Set
- Front
- Back
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The bony labyrinth consists of a system of canals and cavities within the ___ portion of the _____.
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petrous
temporal bone |
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To otic (or periotic) capsule consists of three parts:
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vestibule
semicircular canals cochlea |
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With further ossification of the fetal cartilage, this becomes assimilated into the homogeneous petrous bone and no longer exists.
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Otic capsule
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The vestibule is ___ in its anteroposterior and vertical dimensions and about ___ across.
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5mm
3mm |
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The _____ secretes a clear serous fluid called perilymph.
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Perilymphatic epithelium
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Perilymph is found in the _____.
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Osseus labyrinth
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Endolymph is found in the _____.
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Membranous labyrinth
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The surface of the bony labyrinth is covered with a _____ membrane.
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Fibrous
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Which SCC opens into the vestibule on both ends?
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The lateral SCC.
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This forms the central portion of the bony labyrinth.
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The osseous vestibule.
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This predominance separates the pyramid of the vestibule superiorly from the elliptical and spherical recesses inferiorly.
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Vestibular Crest
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The core of the cochlea is ____ in order for the nerve fibers to exit the cochlea.
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Porous
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