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Lung-nontumor

Embryology


Reviewers: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 26 August 2011, last major update August 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

General
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● The lungs develop from the ventral wall of the foregut
● The midline trachea develops two lateral outpouchings, the right and left lung buds
● The lung buds extend into primitive thoracic mesenchyme that becomes bronchial cartilage and other connective tissue
● The right lung bud develops three branches that become mainstem bronchi, the left lung bud develops two branches that become mainstem bronchi
● The phases of lung development are embryonic (3 1/2 to 6 weeks), pseudoglandular (6 to 16 weeks), canalicular (16 to 28 weeks), saccular (28 to 36 weeks) and alveolar (36 weeks to term)

Diagrams / micro images
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Various images

End of Lung-nontumor > Embryology


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