Fetal Development Pictures | 18 Weeks
Fetal Development at 18 weeks:
lungsLungsTiny air sacs called alveoli are forming to prepare for breathing air.
placentaPlacentaAt this point, the placenta is mature enough to take over as the main support system and the site of your hormone production. It is responsible for bringing oxygen and nourishment to your baby, then taking away waste products.
reproductive organsReproductive OrgansA baby boy's prostate gland is forming, as are a baby girl's uterus and ovaries.
What's happening this week:
The limbs are lengthening, but not much fat has formed under the skin yet. Your baby is between 5 and 5 3/4 inches from crown to rump, and his most active phase has just begun: acrobatics, kicks, swallowing and breathing motions take up a lot of his day!
Your pregnancy week by week: 18 Weeks Pregnant