Difference between revisions of "Pregnancy"

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'''Pregnancy''' describes the condition of a mother carrying her unborn offspring<ref>In medical terms pregnancy is used only to describe the state of a ''human'' mother. In informal circles it is sometimes used to describe the state of any gestating mammal</ref>. A woman becomes pregnant when a fertilised egg&mdash;a new human life&mdash;is implanted into her [[uterus]].  
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'''Pregnancy''' describes the condition of a mother carrying her unborn offspring<ref>In medical terms pregnancy is used only to describe the state of a ''human'' mother. In informal circles it is often used to describe the state of any gestating mammal</ref>. A woman becomes pregnant when a fertilised egg&mdash;a new human life&mdash;is implanted into her [[uterus]].  
 
Pregnancy lasts approximately nine months, after which the baby, if born naturally, is born via the [[birth canal]]. Pregnancy in animals other than humans is referred to under the broader term of [[gestation]].
 
Pregnancy lasts approximately nine months, after which the baby, if born naturally, is born via the [[birth canal]]. Pregnancy in animals other than humans is referred to under the broader term of [[gestation]].
  

Revision as of 23:41, 24 May 2008

Pregnancy describes the condition of a mother carrying her unborn offspring[1]. A woman becomes pregnant when a fertilised egg—a new human life—is implanted into her uterus. Pregnancy lasts approximately nine months, after which the baby, if born naturally, is born via the birth canal. Pregnancy in animals other than humans is referred to under the broader term of gestation.

Stages of Pregnancy

Implantation

Pregnancy begins with the implantation of the conceptus into the wall of the uterus. This contains the cells that will develop into the baby as well as those which will go on to form the placenta and membranes.

Embryonic Stage

The embryonic stage consists largely of the differentiation of cells into the tissues of the body. It is divided up into 23 carnegie stages which represent different stages of development.

Fetal Stage

The fetal stage mainly consists of the growth of the foetus and continued development of internal systems.

Footnotes

  1. In medical terms pregnancy is used only to describe the state of a human mother. In informal circles it is often used to describe the state of any gestating mammal

See Also