In human prenatal development, fetal development begins from the ninth week after fertilization (which is the eleventh week of gestational age) and continues until the birth of a newborn.

Dec 19, 2025 · fetus, the unborn young of any vertebrate animal, particularly of a mammal, after it has attained the basic form and structure typical of its kind. A brief treatment of the fetus …

The meaning of FETUS is an unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind; specifically : a developing human from usually two months after …

Mar 19, 2024 · Fetal development is how a fetus grows during pregnancy. It begins at conception and ends at birth. Many changes occur to the fetus and the pregnant person in this time.

Aug 3, 2025 · The fetus represents a remarkable stage of human development, spanning from the eighth week after conception until birth. This period transforms a cluster of cells into a …

A thin-walled sac that surrounds the fetus during pregnancy. The sac is filled with liquid made by the fetus (amniotic fluid) and the membrane that covers the fetal side of the placenta (amnion).

Mar 6, 2025 · A fetus is the stage of human development that occurs between the embryonic phase and birth, typically starting around ten weeks after conception. This stage is …

Sep 10, 2024 · There are two ways to measure what stage of development a baby is in: fertilization age and gestational age. These terms can be somewhat confusing since they are …

Mar 18, 2025 · At the 11th week of pregnancy, or the ninth week after conception, your baby now is called a fetus. At this point in pregnancy, the face is broad, the eyes widely separated, the …

2 days ago · fetus (plural fetuses or fetus or (hypercorrect) feti or (misconstruction) fetii) (American spelling, also Canada, Australia) An unborn or unhatched vertebrate showing signs …