Nasal Cavity


 
 
Concept Explanation
 

Nasal Cavity

Nasal Cavity:

Nasal Cavity: The space inside the nose. It is an air- filled, hollow and large space that is present above the nose and in the middle of the face. It consists of two cavities, which are the extention of the nostrils(external opening of nose) seprated by the nasal septum.

Function of the nasal cavity : The wall of the nasal cavity are covered with the hair or cilia that trap the dust and harmful particles and purify the inhaled air. The back and forth movement of cilia help in moving the dust particles to the throat where they either get swallowed or excreted through the nasla cavity.

Sample Questions
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Question : 1

Which of the following are correct ?

(a) Air enters the nose through the nasal cavity.

(b) Nasal cavity is an air- filled, hollow and large space that is present below  the nose and in the middle of the face.

(c)  The hair, present in the nostrils, stop the dust and germs, from entering the respiratory system.

Right Option : B
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Question : 2

Which of the following are correct ?

(a) Air enters the nose through the nasal cavity.

(b) The hair, present in the nostrils, stop the dust and germs, from entering the respiratory system.

(c) Nasal cavity is an air- filled, hollow and large space that is present above the nose and in the middle of the face.

Right Option : D
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Explanation
Question : 3

Which of the following are correct ?

(a) Nasal cavity is the space inside the nose.

(b) The wall of the nasal cavity are covered with the hair that traps the dust and harmful particles and purify the inhaled air.

Right Option : C
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