IGNOU MFN 1 2015 2016 - Graphically illustrate the organs involved in respiration and describe

Question

Graphically illustrate the organs involved in respiration and describe the mechanism of respiration?

04 Jan 2018

Answer :

Word Count : 435

Nose

The nose has two external nostrils . These are separated by a cartilaginous (made up of cartilage) structure called septum. Hairs are present in the inner lining of the nostrils. The nostrils open up into a wide cavity, the nasal chambers. The nose has many important functions as follows:-

Prevents entry of dust particles. Otherwise, these particles could cause many problems for the smooth flow of gases in and out of the lungs.

The mucus traps microorganisms, like bacteria and fungi and thus prevents them from entering the human

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