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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
Answer the following:
Which part of the ear determines the pitch of a sound?
Eye : Optic nerve : : Ear : ___________
Given in the box below are a set of 14 biological terms. Of these, 12 can be paired into 6 matching pairs. Out of the six pairs, one has been done for you as an example.
Example : endosmosis - Turgid cell.
Identify the remaining five matching pairs :
| Cushing’s syndrome, Turgid cell, Iris, Free of rod and cone cells, Colour of eyes, Hypoglycemia, Active transport, Acrosome, Addison’s disease, Blind spot, Hyperglycemia, Spermatozoa, Endosmosis, Clotting of blood. |
With reference to the human ear, answer the question that follow:
Name the nerve, which transmits messages from the ear to the brain.
Name that part of ear which vibrates when outside sound falls on it.
Why should we not put a pin or pencil in our ears ?
Choose the correct answer.
Labyrinth is a part of ____________
Complete the following sentence with appropriate Word
The sequence of ear ossicles of vertebrates starting from the tympanum is:
List the causes of noise pollution.
With reference to human ear answer the question that follow:
Name the part of the ear associated with Static balance.
