17.5mm
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
fetus
Fetus
An embryo is called a fetus after 8 weeks of development.
An embryo typically develops into a fetus around 8 weeks after fertilization. At this point, the major organs have begun to form and the fetus starts to resemble a human.
Usually this is not possible condition for a fetus
8 weeks
i had a sonogram yesterday and the sac could be seen but no fetus what does this mean
A human fetus that is 26-29 weeks gestation has an average weight of 1110-1350 grams.
A developing embryo becomes a fetus at around 8 weeks after fertilization. At this point, the major organ systems have started to form and the embryo takes on a more human-like appearance.
The embryo weighs 1 gram between 5-8 weeks. A fetus is far bigger than one gram.
Well, it seems like after the 8th week it's called a fetus, but before it's just an embryo.