At birth, umbilical cord can be two to four feet long. Birth may mold and elongate the fetal head, a safety precaution to reduce the skull's diameter for an easier birth, without damaging the fetal brain. After delivery, the baby's head returns to a rounded shape. Eyes have no tear ducts yet, they appear a few weeks after birth.
Lungs begin to increase production of surfactant to keep alveoli open.
SKIN Last of vernix usually disappears, but may remain until birth.