fetus: Quick Facts

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Oct. 30, 2026

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Why teaching AI about symmetry could make prenatal diagnosis more reliable • Oct. 20, 2026, 9:20 AM ET (Medical Xpress)

Facts

Also Known As	foetus

Photos and Videos

Leonardo da Vinci: pen-and-ink studies of human fetus

Diagram showing human embryological and fetal development in three stages: at six weeks, the embryo is enclosed within halved amnion, chorion, and uterus; another view at six weeks highlights the formation of the umbilical cord; at three months, the fetus is shown within the halved amnion, chorion, and uterus, with the placenta and umbilical cord labeled.

Close-up illustration of a human fetus inside the womb, showing the developing baby holding the umbilical cord in a warm, reddish environment.

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Topics

gestational age prenatal development Fetal personhood prenatal testing Gestation fetal alcohol syndrome amniocentesis life cycle adolescence old age infancy puberty embryo adulthood zygote Larva childhood aging

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