lung bud


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tracheal bud

the outgrowth from the caudal end of the floor of the respiratory diverticulum.
Synonym(s): lung bud, primary lung bud
Farlex Partner Medical Dictionary © Farlex 2012

res·pi·ra·to·ry di·ver·tic·u·lum

(res'pir-ă-tōr-ē dī'vĕr-tik'yū-lŭm)
Primordial pharynx that gives rise to the epithelial lining of the respiratory tract on glands of the bronchial tree.
Synonym(s): lung bud, tracheobronchial diverticulum.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

lung bud

In the embryo, a pouch that grows out of each side of the developing foregut tube beginning at stage 12 (26 days). It pushes into the primitive pleural coeloms and continues to elongate and branch to become the embryonic lung.
See also: bud
Medical Dictionary, © 2009 Farlex and Partners
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References in periodicals archive ?
In humans, primary lung buds develop during the fourth week of gestation from the endoderm of the foregut.
Impact of environmental chemicals on lung development
The intrapulmonary pulmonary arteries arise from the lung buds and the extrapulmonary arteries arise from the proximal portion of the sixth aortic arch.
Isolated Major Aortopulmonary Collateral as the Sole Pulmonary Blood Supply to an Entire Lung Segment
It has been demonstrated that the formation of accessory diaphragm is due to the improper timing in the interaction of the lung buds and septum transversum.
Duplicated right crus of the diaphragm: a cadaveric case report

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