24 Weeks

The baby is now between 12 and 12 1/2" long and around 1 1/4 to 1 1/2 pounds, and gaining approximately 6 ounces a week. The brain continues in its rapid growth mode and the lungs are maturing. The special cells which produce surfactant are developing. Surfactant is what helps the air sacs inflate, and preemies who struggle with breathing are usually having difficulties because the special cells have not fully developed prior to delivery. The taste buds are getting more sensitive, and baby may even react to a particularly strong taste in Mommy's food. The sweat glands are developing now, as well. The hands are getting more coordinated, as evidenced in more precise thumb-sucking skills. The big news of the week however is that the baby is now officially viable!