The sternum develops somewhere between week 6 and 8, so well within the first trimester.
second trimester
the vocal chords
All the organs of the baby develop in first trimester. Means in first three months ofpregnancy.
the third trimester
2nd trimester
The third trimester starts at week 28, or 7 months into the pregnancy.
The first trimester is 0-12 weeks of pregnancy, roughly 3 months
The heart begins to beat at the end of 3 weeks. Our 'reptilian brain' develops within the first two months, but our conscious thought does not develop until six months into the pregnancy.
3rd trimester
The role of DHA in fast trimester in pregnancy is that it is used in neurological and visual development.
in the second
The last trimester of pregnancy is sometimes referred to as advanced pregnancy.