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प्रश्न
Give reason:
Three small bones of ear ossicles are advantageous as compared to one single bone for hearing.
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उत्तर
The ear ossicles, malleus, incus, and stapes create a complex lever system. This design is advantageous for hearing because it:
- Increases the mechanical force of vibrations.
- Improves the efficient transmission of sound energy from the eardrum to the inner ear structures.
- Reduces the amplitude of vibrations.
Due to impedance matching, mammalian hearing is more sensitive and has higher frequency limitations than reptiles.
संबंधित प्रश्न
Write short notes on the following: Cochlea
The number of oscillations per second of a vibrating object is called its time period.
The exact location of the Yellow spot
Differentiate between Near vision and Distant vision (shape of the eye lens)
Where is the Cochlea located? Briefly mention its function.
Name the three ear ossicles.
Name the following:
The ear ossicle in contact with the oval window of the inner ear.
Mention the name of passage is the outer ear which carries sound waves to the eardrum.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Eyes: Photoreceptors :: Ears : ______.
- Draw a neat and well labelled diagram of the membranous labyrinth found in the inner ear.
- Based on the diagram drawn above in (i), give a suitable term for each of the following descriptions:
- The structure responsible for hearing.
- The sensory cells that help in hearing.
- The membrane-covered opening that connects the middle ear to inner ear.
- The nerves that carry impulses from the ear to the brain.
- The tube which equalises the air pressure on either side of the ear drum.
