Q6 of 102 Page 130

Given below is the diagram of a part of the human ear. Study the same and answer the questions that follow:


(i) Give the collective biological term for Malleus, Incus, and Stapes.


(ii) Name the parts labelled A, B, and C in the diagram.


(iii) State the functions of the parts labelled 'A' and 'B'.


(iv) Name the audio receptor region present in the part labelled ‘A’.

(i) Ear ossicles


(ii) A - Cochlea, B - Semicircular canals, C - Ear ossicles


(iii) Cochlea helps in transmitting impulses to the brain via the auditory nerve. Semicircular canals help in maintaining dynamic equilibrium of the body.


(iv) Organ of Corti


More from this chapter

All 102 →
4

Given below is a diagram depicting a defect of the human eye. Study the same and answer the questions that follow:


(a) Name the defect shown in the diagram.


(b) Give two possible reasons for this defect.


(c) Name the parts labelled 1 to 4.


(d) Name the type of lens used to correct this eye defect


(e) Draw a labelled diagram to show how the above-mentioned defect is rectified using the lens named above.

 5

The figure below is the sectional view of a part of the skull showing a sense organ:


(i) Name the sense organ.


(ii) What are the parts labeled “m”, “I” and “s”? What do these parts constitute collectively?


(iii) What do you call the part shown in the form of a spiral? What is its function?


(iv) Name the part labeled “to”? What is its function?

 7

Draw a labelled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.

 8

Have a look at the posture of this girl who is reading a book and answer the questions which follow:

(a) Name the problem she is facing.


(b) What are the two conditions shown in sections A and B of the eye as applicable to her?


(c) What kind of reading glasses does she need?