Human lungs, like all organs, begin their existence as clumps of undifferentiated stem cells. But in a matter of months, the cells get organized. They gather together, branch and bud, some forming airways and others alveoli, the delicate sacs where our bodies exchange oxygen for carbon dioxide. The end result, ideally: two healthy, breathing lungs.
Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.