File:Buell07.jpg

Fig. 7. Origin of the Pulmonary Vessels in the Chick

From an injected embryo of 35 somites, 55 hours' incubation, dissected by the paraffin method.

The lung consists of a simple ventral diverticulum beginning to show lateral swellings into right and left primary buds. The common pulmonary vein opens into the sinus at the level of the lung rudiment. It drains the capillaries of both cephalic and post-caval portions of the splanchnic plexus. The anastomoses between the plexus and the cardinal veins are established. The pulmonary arches are not formed, although the dorsal and ventral primordia of the arch are indicated by the blind pouches. The cranial end of the pulmonary artery is now easily recognized in the capillary plexus.

1922 Chicken Pulmonary: Fig 1 | Fig 2 | Fig 3 | Fig 4 | Fig 5 | Fig 6 | Fig 7 | Fig 8 | Fig 9 | Fig 10 | Plate 1 | Plate 2 | Carnegie No.66 | Chicken Development | Respiratory

Links: Carnegie Institution of Washington - Contributions to Embryology | Chicken Development | Respiratory System Development

Historic Disclaimer - information about historic embryology pages

Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)