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The Endowment for Human Development
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Main Stem Bronchi


9 weeks

From The Biology of Prenatal Development.Buy Now

Script: In the respiratory system, the right and left main stem bronchi are present and will eventually connect the trachea, or windpipe, with the lungs.

All ages referenced to fertilization, not last menstrual period.
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4D Ultrasound
The Fetal Period
The Fetal Period
Main Stem Bronchi
Main Stem Bronchi
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