Advertisements
Advertisements
Question
The figure below is the sectional view of a part of the skull showing a sense organ:
What are the parts labeled 'm', 'i' and 's'? What do these parts constitute collectively?
Advertisements
Solution
m - malleus, i - incus and s - stapes respectively. These are collectively called as ear ossicles.
RELATED QUESTIONS
Draw labelled diagrams of the following: Ear
Given below is a representation of a kind of pollution. Study the same and answer the questions that follow
(i) Name the kind of pollution.
(ii) List any three common sources of this pollution.
(iii) Mention three harmful effects of this pollution on human health.
(iv) Explain the term ‘Pollutant’.
(v) Name two soil pollutants
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. |
Draw a labelled diagram of the inner ear.
Draw a labeled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.
State the functions of the following:
Semi-circular canals
Vibrating particles travel all the way from the vibrating objects to the ear.
The part of the inner ear which is responsible for hearing is ______.
Give reason:
Three small bones of ear ossicles are advantageous as compared to one single bone for hearing.
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.
