| Column 1 | Column 2 (memorize)
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| Perilymph | The fluid between the bony and membranous labyrinth.
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| Endolymph | The fluid inside the membranous labyrinth.
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| What compartments surround the membranous labyrinth in the cochlea? | Scala vestibuli and scala tympani.
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| What forms the membranous labyrinth within the cochlea? | Cochlear duct or scala media (SM)
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| What is the shape of the cochlear duct? | Triangular.
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| What separates the cochlear duct and the scala vestibuli? | Vestibular (Reissner's) membrane.
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| Where do the scala vestibuli and scala tympani communicate? | Through an opening in the apex of the cochlea called the helicotrema.
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| What separates the cochlear duct and the scala tympani? | Basilar membrane.
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| What is the receptor organ of the cochlea? Where is it situated? | Organ of Corti. It rests on the basilar membrane.
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| Stereocilia of the outer hair cells project into the overlying ____. | Tectorial membrane.
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| The peripheral processes of what innervate the hair cells in the organ of the Corti? | Auditory spiral ganglion.
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| Where is the auditory spiral ganglion located? | In the modious, the bony core of the cochlea.
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| Where are the dorsal and ventral cochlear nuclei? | They surround the inferior cerebellar peduncle in the rostral medulla.
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| Where do two branches of the VIII nerve terminate? | 1). Anteroventral cochlear nucleus (AVCN) and 2). both the posteroventral cochlear nucleus (PVCN) and dorsal cochlear nucleus (DCN).
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| How does the frequency sensitivity of the basilar membrane change along the cochlear duct? | High frequencies preferentially stimulate the base, while low frequencies preferentially stimulate the apex.
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| What are the large brainstem tracts in the auditory system? | 1). Trapezoid body 2). lateral lemniscus and 3). Brachium of the inferior colliculus.
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| Where is the medial geniculate cortex? | It is ventral to the pulvinar (See BW7). It contains part of the caudal thalamus and rostral midbrain.
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| Where is the auditory cortex? | It's buried in the lateral fissure.
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