Canadian Medical Guide > Anatomy > Embryonic Structures > Fetus Terms and Definitions

Fetus

Medical Definition:	The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO.
Guide Notes:	mammalian only; human: 3d month to term; fetus in fetu: index under FETUS /abnorm; FETUS and PREGNANCY: Manual 18.4.3, 21.55; definition & use: 21.53; specialty for fetus & newborn inf = PERINATOLOGY; retained fetus: index under ABORTION, MISSED; for mumm
Also Called:	Fetal Tissue

Fetus Categories.

Aborted Fetus - A mammalian fetus expelled by INDUCED ABORTION or SPONTANEOUS ABORTION.

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