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Appendix 2
The Development of the Unborn Child's Body
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Central Nervous System
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Timing
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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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