|
Development features
|
Heartbeat
|
Mass
|
Week 1
|
Embryo, uterine wall, uterine cavity
|
No
|
0.5g
|
Week 4
|
Arm bud, eyes, umbilical cord, leg bud, embryo, amnion, placenta, uterine wall, uterine cavity
|
No
|
0.8g
|
Week 6
|
External ear, eyes, umbilical cord, amnion, placenta, uterine wall, uterine cavity, wrist region, fingers forming, head area, food plate
|
No
|
2g
|
Week 8
|
Ears, mouth, arms, legs, feet, amniotic fluid, uterine wall, eyes with eyelids, nose, fingers, hands, toes, placenta, umbilical cord, amnion.
|
No
|
15g
|
Week 12
|
Uterine wall, ears, mouth, arms, hands, amniotic fluid, legs, feet, amnion, eyes with eyelids, nose, fingers, placenta, umbilical cord, toes.
|
Yes
|
125g
|
Week 16
|
Skin is pink and transparent, ears, mouth, hands, arms, amniotic fluid, legs, uterine wall, eyes with eyelids, amnion, nose, fingers, placenta, umbilical cord, toes, feet.
|
Yes
|
350g
|
Week 28
|
Skin is red and wrinkled, legs, arms, mouth, nose, amniotic fluid, ears, body is covered with fine soft hair, uterine wall, feet toes, amnion, umbilical cord, hands, placenta, fingers, eyelashes, eyelids, eyebrows.
|
Yes
|
1500g
|
Week 36
|
legs, arms, mouth, nose, amniotic fluid, ears, downy covering has disappeared, fetus is in head down position, uterine wall, feet toes, amnion, umbilical cord, hands, placenta, fingers, eyelashes, eyelids, eyebrows.
|
Yes
|
3500g
|
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