How are the lungs designed in human beings to maximise the area for exchange of gases?

How are lungs desinged in human beings to maximise the area for exchange of gases?

How are oxygen and carbon dioxide transported in human beings? How arelungs designed tomaximise the area for exchange of gases?

How are alveoli designed to maximise the exchange of gases ?

How are alveoli designed to maximise the exchange of gases?