Shrimp Week #26

Your Baby
There's an important development in your baby's lungs this week: They begin to secrete surfactant, a fatty substance that covers the inner lining of the air sacs and allows the lungs to expand normally so breathing can occur. Although it will be approximately 10 more weeks before the lungs are fully operational, the production of surfactant is an essential step in making the fetus viable outside the womb.