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प्रश्न
Give a brief account of: Mechanism of hearing
उत्तर
Mechanism of hearing
The pinna of the external region collects the sound waves and directs it towards ear drum or external auditory canal. These waves strike the tympanic membrane and vibrations are created. Then, these vibrations are transmitted to the oval window, fenestra ovalis, through three ear ossicles, named as malleus, incus, and stapes. These ear ossicles act as lever and transmit the sound waves to internal ear. These vibrations from fenestra ovalis are transmitted into cochlear fluid. This generates sound waves in the lymph. The formation of waves generates a ripple in the basilar membrane. This movement bends the sensory hair cells present on the organ of corti against tectorial membrane. As a result of this, sound waves are converted into nerve impulses. These impulses are then carried to auditory cortex of brain via auditory nerves. In cerebral cortex of brain, the impulses are analysed and sound is recognized.
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संबंधित प्रश्न
Wax secreting gland present in the ear canal is called ______.
The part of internal ear responsible for hearing is ______.
The organ of corti is a structure present in ______.
Comment upon the role of ear in maintaining the balance of the body and posture.
Arrange the following in the order of reception and transmission of sound wave from the ear drum:
Cochlear nerve, external auditory canal, eardrum, stapes, incus, malleus, cochlea.
While travelling at a higher altitude, a person complains of dizziness and vomiting sensation. Which part of the inner ear is disturbed during the journey?
What is the function ascribed to Eustachian tube?
Explain the structure of middle and internal ear with the help of diagram.
