Q4 of 102 Page 130

Given below is a diagrammatic representation of a part of the human ear.

(i) Name the parts numbered 1-6.


(ii) Which parts of the ear shown here are complete.


(i) 1- Auditory canal


2- Ear ossicles (hammer, anvil, stirrup)


3- Ear drum or Tympanum


4- Oval window


5- The opening of the Eustachian tube


6- Round window


(ii) The part of the ear that is shown here in complete is the middle ear.


Explanation: This is because all the parts in the middle ear that is :- the ear ossicles (hammer, anvil, stirrup), the oval window, the eustachian tube and the round window all belongs to the middle ear. Though the auditory canal and the ear drum belong to the external ear, pinna is missing from the diagram thus only the middle ear is completely shown.


More from this chapter

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2

State the functions of the following: -

(a) Semi-circular canals _____________


(b) Cochlea _____________


(c) Auditory nerve _____________

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Name the four fundamental tastes and the areas of the tongue which perceive them. …………………………………….

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Which parts of your hand are most sensitive to touch?

 6

Mention if the following statements are true (T) or false (F):

(i) The sense of hunger is located on the tongue. T/F


(ii) The human ear is concerned with hearing only. T/F


(iii) Pinna concentrates and directs sound waves towards tympanum T/F