Fetal stage

Prenatal organism between the embryonic state and birth

This article is about the stage of prenatal development. For other uses, see Fetus (disambiguation).

"Foetus" redirects here.

For the band, see Foetus (band). For the film, see Foetus (film).

A fetus or foetus (; pl.: fetuses, foetuses, rarely feti or foeti) is the unborn mammalianoffspring that develops from an embryo.^[1] Following the embryonic stage, the fetal stage of development takes place.

Prenatal development is a continuum, with no clear defining feature distinguishing an embryo from a fetus.

Embryo vs fetus vs zygote

However, in general a fetus is characterized by the presence of all the major body organs, though they will not yet be fully developed and functional, and some may not yet be situated in their final anatomical location.

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.

Etymology

The word fetus (plural fetuses or rarely feti^[2]) c

when is a fetus fully developed

when is a fetus viable outside the womb