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Growth and Aging of the Normal Human Lung
February 1975
February 1975
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Abstract
The lung grows primarily by alveolar multiplication, but alveoli also double in size
from infancy to adult life. The time at which alveolar multiplication ceases is obscure.
As the lung ages it loses alveolar surface area due to alteration in the internal
geometry of the lung. Alveolar wall tissue is also lost, thought to reflect loss of
capillary bed.