Appendix 2
The Development of the Unborn Child's Body

 

Central Nervous System

 

Timing

 Source
The central nervous system begins to form.
 Day 19 after fertilization Sadler, front pages
The central nervous system appears. Beginning of 3rd week Sadler, p 411
The enlage (i.e. the earliest discernible indication) of the central nervous system is present. End of 4th week of development Larsen, p 52


 


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