If each human lung contains about 300 million alveoli with a summed total surface area for gas exchange of 40 square meters, what is the approximate surface area of a single alveolus?

Question

Quizplus · Accepted Answer

The total surface area of 40 square meters is equivalent to 40,000,000 square millimeters. Dividing this by 300 million alveoli gives approximately 0.133 square millimeters per alveolus.

If Each Human Lung Contains About 300 Million Alveoli with a Summed