How many lobes does the right lung have?

How many lobes does the right lung have?

Before it enters the lungs, air must pass through which of the following structures?

Before it enters the lungs, air must pass through which of the following structures?

The function of an alveolus is most evident in the basic anatomy of which type of alveolar cell?

The function of an alveolus is most evident in the basic anatomy of which type of alveolar cell?

What is the name of the structure that covers the airway while swallowing food?

What is the name of the structure that covers the airway while swallowing food?

How is oxygen carried after entering the blood of the pulmonary capillaries?

Gases diffuse down their concentration gradients, so in order for the body to exchange respiratory gases with the air as needed, air breathed into the lungs must have a __________ concentration of oxygen and a(n) __________ concentration of carbon dioxide compared to the blood in the lungs.