Each Lung Consists of Approximately How Many Alveoli

Question

Each lung consists of approximately how many alveoli?
A) 100,000
B) one billion
C) 500,000
D) 150 million
E) 100 billion

Accepted Answer

Each lung consists of approximately 150 million alveoli which provide a large surface area for gas exchange to occur. Option A, C, and E are incorrect because they provide a much smaller or larger number of alveoli than the actual count. Option B is incorrect because it gives an exaggerated count of alveoli.