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The Endowment for Human Development
The Endowment for Human Development
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Bronchial Tree


4 months, 2 weeks

From The Biology of Prenatal Development.Buy Now

Script: In the respiratory system, the bronchial tree is now nearly complete.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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Vernix Caseosa
Vernix Caseosa
4D Ultrasound
4D Ultrasound
Bronchial Tree
Bronchial Tree
Circadian Rhythms
Circadian Rhythms
Responds to Sound
Responds to Sound
Skin and Hair
Skin and Hair
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