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Question
Assertion :Hair cells on the basilar membrane (the organ of Corti) are responsible for hearing. Reason: Pressure waves, which begin at the oval window, cause the basilar membrane to vibrate, so that the cilia of the hair cells touch the tectorial membrane. This causes the hair cells to initiate nerve impulses, which are carried by the auditory nerve to the brain.
Assertion :Hair cells on the basilar membrane (the organ of Corti) are responsible for hearing. Reason: Pressure waves, which begin at the oval window, cause the basilar membrane to vibrate, so that the cilia of the hair cells touch the tectorial membrane. This causes the hair cells to initiate nerve impulses, which are carried by the auditory nerve to the brain.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The hair cells located in the organ of Corti transduces mechanical sound vibrations into nerve impulses. They are stimulated when the basilar membrane, on which the organ of Corti rests, vibrates. At the base of the hair cells is a network of cochlear nerve endings, which lead to the spiral ganglion of Corti in the cochlea. The spiral ganglion sends axons into the cochlear nerve.
The hair cells located in the organ of Corti transduces mechanical sound vibrations into nerve impulses. They are stimulated when the basilar membrane, on which the organ of Corti rests, vibrates. At the base of the hair cells is a network of cochlear nerve endings, which lead to the spiral ganglion of Corti in the cochlea. The spiral ganglion sends axons into the cochlear nerve.
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