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19 Cards in this Set
- Front
- Back
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converts sound pressure waves generated by ossicles against oval window into electrical activity in spiral ganglion neurons
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cochlea
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has 3 comparments, scala vestibuli, scala media, and scala tympani
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cochlea
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where do you find the organ of corti?
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on the basilar membrane of the cochlea
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overlies the hair cells of the cochlea
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tectorial membrane
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lies on the basilar membrane and is composed of hair cells and supporting cells
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organ of corti
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sensory transducers for hearing
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inner hair cells of the organ of corti
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how many rows of inner hair cells are there?
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1 row
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how do the inner hair cells transduce the vibratory sensations into electrical sensations?
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they release neurotransmitter that is released onto the processes of bipolar neurons whose cell bodies are located in the spiral ganglion
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what type of fluid fills the scala media?
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endolymph
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only notable epithelium w/in our body w/ capillaries
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striae vascularis
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function of the stria vascularis
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maintain the special ionic composition of the endolymph in the scala media that bathes the hair cells
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2 vestibular organs
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otolith organs (saccule and utricle) & semicircular canals
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what types of stimuli do the otolith organs detect?
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static head tilt and linear acceleration
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what type of stimuli do the semicircular canals detect?
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head turns
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the otolith organs refers to _____ and ______
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saccule and utricule
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where do you find the crista ampularis?
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semicircular canals
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what does the cristal ampularis detect?
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head rotation (in the semicircular canals)
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where would you expect to find otoconia?
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sprinkled on top of the membrane of the otolith organs (saccule and utricle), allowing them to detect changes in static head position & linear acceleration
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the macula, a specialized membrane containing hair cells, is found where?
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in the otolith organs
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