The sternum develops somewhere between week 6 and 8, so well within the first trimester.
second trimester
Fingers and toes develop during the first trimester of pregnancy in a human fetus.
the vocal chords
Fingers and toes develop during the first trimester of pregnancy, typically around week 8 to week 12. By this time, the hand plates develop finger ridges and the toes become distinct.
All the organs of the baby develop in first trimester. Means in first three months ofpregnancy.
The nervous system of a fetus begins to develop during the first trimester of pregnancy.
Nerves begin to develop in a fetus during the first trimester of pregnancy, around the 3rd to 4th week after conception.
Fetuses develop nerves during the first trimester of pregnancy, around 5-6 weeks gestation.
The central nervous system develops in a fetus during the first trimester of pregnancy.
Nerves begin to develop in a fetus during the first trimester of pregnancy, around 5-6 weeks gestation.
2nd trimester
The first trimester is 0-12 weeks of pregnancy, roughly 3 months