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प्रश्न
The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.
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- Label the parts 1 to 8.
- State the role of parts 6, 7 and 8.
- Why is it harmful to use a sharp object to remove ear wax? Mention the number and name of the part involved.
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उत्तर
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- Pinna
- Ear drum
- Ear canal
- Hammer
- Semi-circular canal
- Cochlea
- Vestibular portion of auditory nerve.
- Eustachian Tube
- Part 6 (Cochlea): It contains sensory cells for hearing.
Part 7 (Auditory Nerve): It transmits the impulse of hearing to the brain.
Part 8 (Eustachian Tube): It equalises air pressure on both sides of the tympanum. - Sharp objects may damage the (part 3) ear drum and cause deafness. Deafness can result from eardrum or tympanic ruptures.
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संबंधित प्रश्न
Time taken by an object to complete one oscillation is called ___________.
(i) Draw a well labelled diagram of the membranous labyrinth found in the inner ear.
(ii) Based on the diagram drawn above in (i) give a suitable term for each of the following descriptions :
1. The sensory cells that helps in hearing.
2. The part that is responsible for static balance of the body.
3. The membrane covered opening that connects the middle ear to the inner ear.
4. The fluid present in the middle chamber of cochlea.
5. The structure that maintains dynamic equilibrium of the body.
The ear ossicle which is attached to the tympanum.
Where is the Utriculus located? Briefly mention its function.
Name the three ear ossicles.
The figure below is the sectional view of a part of the skull showing a sense organ:
Name the part labeled 'tm'. What is its function?
Complete the following sentence with appropriate Word
The parts of the human ear concerned with hearing are :
The part of the ear that collects the sound from the surroundings is ______.
Categorise the following parts under (i) external, (ii) middle and (iii) internal ear.
Ear drum, hammer, pinna, cochlea, anvil, stirrup, eustachian tube, tympanum, oval window, semi-circular canals.
With reference to human ear answer the question that follow:
Name the part of the ear associated with Static balance.
