Fetal Development Pictures | 5 Weeks
Fetal Development at 5 weeks:
yolk sacYolk SacYour baby's first circulatory system. The tiny primitive heart pumps blood into this nourishing sac and then it's returned to the body of the embryo.
amniotic sacAmniotic SacThe membranes that will cushion and protect your baby in the womb are forming and filling with amniotic fluid.
What's happening this week:
The embryo has a head and a tail now, and there are even traces of eyes and ears. Your tiny baby is only 1.25 mm long, although the neural tube, brain, heart and skeleton are beginning to form.
Your pregnancy week by week: 5 Weeks Pregnant