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

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{{Critical Periods table}}
 
{{Critical Periods table}}
  
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:'''Links:''' {{Critical period}} | [[Abnormal_Development_-_Teratogens#Critical_Periods_of_Development|Table version]] | [[Human Abnormal Development]] | [[Abnormal_Development_-_Teratogens|Teratogens]] | [[:File:Thalidomide external effects timeline.jpg|Thalidomide external effects timeline]] | [[Prenatal Diagnosis]] [[:Category:Timeline|Category:Timeline]]
 
:'''Links:''' {{Critical period}} | [[Abnormal_Development_-_Teratogens#Critical_Periods_of_Development|Table version]] | [[Human Abnormal Development]] | [[Abnormal_Development_-_Teratogens|Teratogens]] | [[:File:Thalidomide external effects timeline.jpg|Thalidomide external effects timeline]] | [[Prenatal Diagnosis]] [[:Category:Timeline|Category:Timeline]]
  

Latest revision as of 13:11, 15 May 2019

Critical Periods of Human Development

Dark Orange = major abnormality | Light Orange = minor abnormality

The table above 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 on Human Abnormal Development as a formatted table below.

Critical Periods of Human Development
Conceptus Embryonic development (weeks) Fetal period (weeks)
1
2
3
4
5
6
7
8
9
16
20-36
38
Early zygote.jpg Week2 001 icon.jpg Stage9 sem4c.jpg Stage13 sem1c.jpg Stage15 bf1c.jpg Stage17 bf1c.jpg Stage19 bf1c.jpg Stage23 bf1c.jpg
Neural
Stage2.jpg Heart
Upper limbs
Lower limbs
Ear
Eye
CSt3.jpg Palate
Teeth
Week2 001 icon.jpg External genitalia
Loss Major abnormalities Functional and Minor abnormalities
  Critical Period Links: critical period | abnormal development | Critical Periods table | Image - Critical Periods table | Genital | Opioids | Neural | Thalidomide | Environmental


Links: critical period | Table version | Human Abnormal Development | Teratogens | Thalidomide external effects timeline | Prenatal Diagnosis Category:Timeline


Environmental Links: Introduction | low folic acid | iodine deficiency | Nutrition | Drugs | Australian Drug Categories | USA Drug Categories | thalidomide | herbal drugs | Illegal Drugs | smoking | Fetal Alcohol Syndrome | TORCH | viral infection | bacterial infection | fungal infection | zoonotic infection | toxoplasmosis | Malaria | maternal diabetes | maternal hypertension | maternal hyperthermia | Maternal Inflammation | Maternal Obesity | hypoxia | biological toxins | chemicals | heavy metals | air pollution | radiation | Prenatal Diagnosis | Neonatal Diagnosis | International Classification of Diseases | Fetal Origins Hypothesis



Cite this page: Hill, M.A. (2021, October 17) 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

What Links Here?
© Dr Mark Hill 2021, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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