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प्रश्न
Name the three ossicles of the middle ear.
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उत्तर
Middle ear: It consists of a chain of three ear ossicles called Malleus (hammer), Incus (anvil), and Stapes (stirrup-the smallest bone). On receiving the vibrations from the tympanic membrane, the ear ossicles amplify the vibrations and transfer these to the cochlea.
A short Eustachian tube connects the middle ear to the pharynx. It equalizes air pressure on both sides of the eardrum.
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संबंधित प्रश्न
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Mechanism through which a sound produces a nerve impulse in the inner ear.
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The diagram alongside represents the structure found in the inner ear. Study the same and then answer the questions that follow:
(i) Name the parts labelled A, B, C and D.
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1. Static equilibrium. 2. Dynamic equilibrium. 3. Hearing
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(v) Name the fluid present in the inner ear.
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Name the part labeled 'tm'. What is its function?
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Deafness is caused due to the rupturing of the pinna.
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The Eardrum moves inward when a rarefaction reaches it.
