Title: Early Pregnancy Fetal Development
Headings: Early Pregnancy Fetal Development
Early Pregnancy Fetal Development
Early Pregnancy
4 Weeks of Pregnancy
7 Week Embryo
8 Week Fetus
10 Week Fetus
12 Week Fetus
16 Week Fetus
24 Week Fetus
26-28 Week Fetus
30-39 Week Fetus

Content: 7 ﻿
Bones and joints this week have many things going on. The process of ossification (hardening of the bones) begins. 8 ﻿
With a transvaginal ultrasound, one study shows that over 90 percent of ultrasounds will show a fetal pole with heart motion. 4
8 Week Fetus
Photo © Science Picture Co/Getty Images
The embryo now enters the fetal period. Your baby will be about 2.2 centimeters long at the end of the eighth week (and at the start of the ninth). 6 ﻿ By now, the fetal brain weighs an impressive 43 percent of the total mass of the fetus. This week the baby's gonads will become either testes or ovaries. 9 ﻿ The baby's fingers and toes are webbed and spontaneous movement begins! There are a lot of things that we do know about life before birth. All major organs have begun to form by the end of the eighth week.