Question

Each main (primary) bronchus enters the lung at the apex?
1) True
2) False

Answer 1

The claim that each primary bronchus enters the lung at the apex is false; the primary bronchi enter at the hilum.

Step-by-step explanation:

The statement that each main (primary) bronchus enters the lung at the apex is false. The trachea bifurcates into the right and left primary bronchi, which enter the lungs at the hilum, not the apex. The hilum serves as the point of entry for the bronchi, blood vessels, lymphatic vessels, and nerves into the lungs. The primary bronchi then branch into smaller bronchi and eventually into bronchioles, leading to the structures responsible for gas exchange, such as the alveoli.