How do lungs develop?

Answer: More surfactant is produced as the lungs carry on developing. The blood vessels and lung cells develop and change to increase the amount of surface area available for oxygen to get into the blood. This prepares your baby's lungs to breathe outside the womb.

In the last few weeks of pregnancy the first air sacs develop. More surfactant is produced as the lungs carry oberdeveloping. The blood vessels andblung cells develop and change to increase the amount of surface area available for oxygen to get into the blood. This prepares your baby's lungs to breathe outside the womb