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When Health Begins
Little One Pregnancy Place
Prenatal Development DVD
Image Gallery
Index
0 - 2 Weeks
2 - 4 Weeks
4 - 6 Weeks
6 - 8 Weeks
8 - 10 Weeks
10 - 12 Weeks
3 - 6 Months
6 - 9 Months
The Heart Slideshow (SS)
Eyes, Ears, Mouth & Nose SS
Hands and Arms SS
Feet and Legs SS
The Developing Brain SS
Clinical Highlights SS
Favorites SS
Facial Expressions SS
Fertilization to Implantation SS
Umbilical Cord & More SS
Entire Image Gallery SS
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Slideshow: The Developing Brain
Central Nervous System
#61, Slide 6 of 21
4 weeks, 4 days
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1. neural folds within brain
2. right upper limb bud
3. fused neural folds within spinal cord
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From
The Biology of Prenatal Development
.
All ages referenced to fertilization, not last menstrual period.
