Question

Air is breathed through
(a) Trachea — lungs — larynx — pharynx —
alveoli
(b) Nose — larynx — pharynx — bronchus —
alveoli — bronchioles
(c) Nostrils — pharynx — larynx — trachea —
bronchi — bronchioles — alveoli
(d) Nose — mouth — lungs

Answer 1

Air is breathed through:

Nostrils — pharynx — larynx — trachea —bronchi — bronchioles — alveoli.

This forms the entire respiratory tract.

* Air can either from nose or mouth and then travel through the throat( pharynx), larynx and finally enters the windpipe known as trachea.

* The trachea further gets divided into two branches( hollow tubes) known as bronchi- the left and right bronchus that leads to the left and right lung respectively.

* The bronchi further gets branched into bronchioles which are smaller hollow tubes in the lungs.

* Small air sacs are present at the end of the bronchioles which are known as alveoli.

The exchange of gases such as oxygen and carbon dioxide takes place in this location.

Answer 2

Answer:

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