Question

Place the following structures of the respiratory tree in the order in which air passes through them.

1. secondary bronchi2. bronchioles3. primary bronchi4. alveoli5. terminal bronchioles
A) 3, 1, 2, 5, 4
B) 3, 1, 5, 2, 4
C) 3, 1, 5, 4, 2
D) 1, 3, 5, 2, 4

Answer 1

The order in which air passes through the respiratory tree during inhalation is from the primary bronchi to the secondary bronchi, bronchioles, terminal bronchioles, and finally the alveoli.

Step-by-step explanation:

To answer your question regarding the order in which air passes through the structures of the respiratory tree during inhalation:

The correct sequence is primary bronchi, secondary bronchi, bronchioles, terminal bronchioles, and then alveoli. Therefore, the order is 3, 1, 2, 5, 4 from the options provided.

Here, the primary bronchi are the first part of the bronchial tree that air passes through after leaving the trachea, then it moves into the secondary bronchi, down to the smaller bronchioles, through terminal bronchioles, and finally reaching the alveoli where gas exchange occurs.