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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: 9 أسبوع

وفي الجهاز التنفسي، توجد الشعب الهوائية الجذعية الرئيسية اليمنى واليسرى وسوف تربط في نهاية الأمر الرُّغامَى، أو القصبة الهوائية مع الرئتين.

All ages referenced to fertilization, not last menstrual period.
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