Information AboutFetal |
| CATEGORIES ABOUT FETUS | |
| developmental biology | |
| embryology | |
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surrounds it.]] A fetus (or '''foetus''', or '''fœtus''') is a developing Mammal or other Viviparous Vertebrate , after the Embryo nic stage and before Birth . The plural is '''fetuses''' ('''foetuses''', '''fœtuses''') or, very rarely, ''foeti''. In humans, the fetal stage of Prenatal Development begins eight weeks after Fertilization , when the major structures and Organ System s have formed, until birth. ETYMOLOGY AND SPELLING VARIATIONS The word "fetus" is from the . |
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