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What is the main site of human respiratory system where exchange of gases occurs?

Option: 1

Alveoli

 


Option: 2

Bronchiole

 


Option: 3

Primary and secondary bronchi

 


Option: 4

Trachea


Answers (1)

best_answer

 

Parts of Human Respiratory System -

Alveoli

- wherein

Each terminal bronchiole gives rise to a number of very thin, irregular-walled and vascularised bag-like structures called alveoli.

 

 

 

Posted by

Ajit Kumar Dubey

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