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  4. Conducting part of the tertiary bronchi and bronchioles end up in

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Q. Conducting part of the tertiary bronchi and bronchioles end up in

NTA AbhyasNTA Abhyas 2020Breathing and Exchange of Gases

Solution:

Tracheobronchial tree consists of -
I. Conducting part (from the external nostrils up to the terminal bronchioles). It performs the following functions -
A. Transport of the atmospheric air to the alveoli.
B. Removal of foreign particles.
C. Humidification of air.
D. Maintaining the temperature of air equal to body temperature.
II. Exchange part (includes alveoli and their ducts) - It is the site of actual diffusion of $O_{2}$ and $C O_{2}$ between blood and atmospheric air.