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

Question

Quizplus · 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.

Each Lung Consists of Approximately How Many Alveoli