Question

Which of the following represents the correct flow of air into the lung of a mammal? larnyx → trachea → bronchi → bronchioles → alveoli alveoli → tracheoles → bronchi → trachea trachea → bronchioles → bronchi → alveoli trachea → tracheoles → bronchi → alveoli

Answer 1

Answer:

Larnyx → trachea → bronchi → bronchioles → alveoli

Explanation:

Answer 2

Answer:

Larnyx → trachea → bronchi → bronchioles → alveoli

Explanation:

When we breathe the air enters the nose (or mouth), flowing through the pharynx and larynx then entering the trachea that divides into two bronchi that supply both lungs. These bronchi ramify into smaller bronchi called bronchioles, finally, at the end of the bronchioles are the alveoli, tiny air sacs where the oxygen-carbon dioxide exchange happens.

In the diagram I annexed you can observe the Respiratory System and how is the order of the organs. We can see the larynx before the trachea, and then in the lung, the bronchi followed by the bronchioles and finally the alveoli. The options that contain tracheoles can be discarded because these organs are only located in the trachea of insects or spiders, not in mammals. Therefore the correct answer is larynx → trachea → bronchi → bronchioles → alveoli.

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