Editing Development of the human body (section)

===Fetal development===
{{Main|Fetus}}
A '''fetus''' is a stage in the human development considered to begin nine weeks after fertilization.<ref name="nursing">Klossner, N. Jayne, [https://books.google.com/books?id=B47OVg25g-QC&dq=fetal+stage+begins&pg=PA103 Introductory Maternity Nursing] (2005): "The fetal stage is from the beginning of the 9th week after fertilization and continues until birth"</ref><ref>{{cite web|url=http://www.americanpregnancy.org/duringpregnancy/fetaldevelopment1.htm|title=First Trimester |date=1 May 2012|website=American Pregnancy Association|url-status=live|archive-url=https://web.archive.org/web/20090423022520/http://www.americanpregnancy.org/duringpregnancy/fetaldevelopment1.htm|archive-date=23 April 2009}}</ref> In biological terms, however, prenatal development is a continuum, with many defining features distinguishing an embryo from a fetus. A fetus is also characterized by the presence of all the major body organs, though they will not yet be fully developed and functional and some not yet situated in their final location.
[[Image:Prenatal development table.svg|thumb|center|upright=3.5|Stages in [[prenatal development]]]]