Question 4 Page 105 - Chapter 6 Class 10 - Life Processes

Last updated at July 31, 2026 by

How are the lungs designed in human beings to maximise the area for exchange of gases?

Answer 

  • The respiratory system starts from the nostrils , extending into a trachea (windpipe).
  • As the trachea extends, it divides into two tubes called the bronchi which are connected to each lung.
  • These bronchi further branch into numerous bronchioles , which end in small balloon shaped structures called alveoli . 
  • These alveoli provide a maximum area for the exchange of gases to occur. Being surrounded by thin walls and blood capillaries, the exchange of gases is most effective here.

Exchange of gases at alveoli - Teachoo.jpg

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