Changes

In humans, the fetal stage of [http://en.wikipedia.org/wiki/Prenatal_development prenatal development] tends to be taken as beginning at the [http://en.wikipedia.org/wiki/Gestational_age gestational age] of eleven weeks, i.e. nine weeks after fertilization. In [[biological]] terms, however, prenatal development is a [[continuum]], with no clear defining feature distinguishing an [[embryo]] from a ''fetus''. The use of the term "fetus" generally implies that a mammalian embryo has developed to the point of being recognizable as belonging to its own [[species]]; this is the point usually taken to be the ninth week after [[fertilization]]. 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 [[anatomical]] location.[http://en.wikipedia.org/wiki/Fetus]

In humans, the fetal stage of [http://en.wikipedia.org/wiki/Prenatal_development prenatal development] tends to be taken as beginning at the [http://en.wikipedia.org/wiki/Gestational_age gestational age] of eleven weeks, i.e. nine weeks after fertilization. In [[biological]] terms, however, prenatal development is a [[continuum]], with no clear defining feature distinguishing an [[embryo]] from a ''fetus''. The use of the term "fetus" generally implies that a mammalian embryo has developed to the point of being recognizable as belonging to its own [[species]]; this is the point usually taken to be the ninth week after [[fertilization]]. 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 [[anatomical]] location.[http://en.wikipedia.org/wiki/Fetus]

[[Category: Biology]]

[[Category: Biology]]