Advertisements
Advertisements
प्रश्न
The following diagram refers to the ear of a mammal.
(i) Label the parts 1 to 10 to which the guidelines point.
(ii) Which structure:
(a) converts sound waves into mechanical vibrations?
(b) Converts vibrations into nerve impulses?
(c) Responds to change in position?
(d) Transmits impulses to the brain?
(e) Equalizes atmospheric pressure and pressure in the ear.
Advertisements
उत्तर
(i)
1. Cochlea.
2. Auditory nerve.
3. Semi-circular canals.
4. Ear ossicles.
5. Auditory meatus.
6. Pinna.
7. Er drum.
8. Fenestra rotunda.
9. Eustachian tube.
10. Fenestra ovalis.
(ii)
(a) Ear drum or tympanum.
(b) An organ of Corti.
(c) Semi-circular canals.
(d) Auditory nerve.
(e) Eustachian tube.
APPEARS IN
संबंधित प्रश्न
The number of oscillations per second of a vibrating object is called its time period.
Eye : Optic nerve : : Ear : ___________
Which part of our ear is shaped like a snail shell?
Draw a labelled diagram of the inner ear.
Name the nerve which carries electrical impulses from the cochlea of ear to the brain.
Name the following:
Part of internal ear related to balance.
The figure below is the sectional view of a part of the skull showing a sense organ:
What do you call the part shown in the form of a spiral? What is its function?
Long answer question
Draw the neat labelled diagram of the human ear.
Select the CORRECT match of part of the human ear and its function.
The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.
 |
- 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.
