File:Human-critical periods of development.jpg: Difference between revisions

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Critical Periods of Human Development

Dark Orange = major abnormality
Light Orange = minor abnormality

The table below identifies approximate windows of time, "critical periods", that following exposure to teratogens can lead to developmental abnormalities (anomalies, congenital).

In general, the effects for each system are more severe (major anomalies) in the embryonic period during organogenesis in the first trimester.

Later teratogen exposure are less severe (minor anomalies) in the fetal period during continued growth and differentiation in the second and third trimester.

This figure is also available as a formatted table.

Links: Table version | Human Abnormal Development | Teratogens | Prenatal Diagnosis

Cite this page: Hill, M.A. (2024, April 20) Embryology Human-critical periods of development.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Human-critical_periods_of_development.jpg

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 ==Critical Periods of Human Development==
 {|
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+* '''<font color=orangered>Dark Orange = major abnormality</font>'''
+* '''<font color=orange>Light Orange = minor abnormality</font>'''
 | The table below identifies approximate windows of time, "critical periods", that following exposure to teratogens can lead to developmental abnormalities (anomalies, congenital).
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 This figure is also available as a [[Human_Abnormal_Development#Critical_Periods|formatted table]].
-|
-* '''<font color=orangered>Dark Orange = major abnormality</font>'''
-* '''<font color=orange>Light Orange = minor abnormality</font>'''
 |}