. The elements of embryology . Embryology. VI.] THE LUNGS. 177 and larynx, while the two diverticula behind (Fig. 60, Ig) become the bronchial tubes and lungs. While the above changes are taking place in the hypoblastic walls of the alimentary tract, the splanchnic Pig. Four Diagrams illdstrating the Formation of the Lungs. (After Gotte.) a. mesoblaat; h. hypoblast; d. cavity of digestive canal; I. cavity of the pulmonary diverticulum. In (1) the digestive canal has commenced to be constricted into a dorsal and ventral canal; the former the true alimentary canal, the latter the pulmonary
. The elements of embryology . Embryology. VI.] THE LUNGS. 177 and larynx, while the two diverticula behind (Fig. 60, Ig) become the bronchial tubes and lungs. While the above changes are taking place in the hypoblastic walls of the alimentary tract, the splanchnic Pig. Four Diagrams illdstrating the Formation of the Lungs. (After Gotte.) a. mesoblaat; h. hypoblast; d. cavity of digestive canal; I. cavity of the pulmonary diverticulum. In (1) the digestive canal has commenced to be constricted into a dorsal and ventral canal; the former the true alimentary canal, the latter the pulmonary tube ; the two tubes communi- cate with each other in the centre. In (2) the ventral (pulmonary) tube has become expanded. In (3) the expanded portion of the tube has become con- stricted into two tubes, still communicating with each other and with the digestive canal. In (4) these are completely separated from each other and from the digestive canal, and the mesoblast has also begun to exhibit externally changes corresponding to the internal changes which have been going on. F. <feB. 12. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Foster, M. (Michael), Sir, 1836-1907; Balfour, Francis M. (Francis Maitland), 1851-1882; Sedgwick, Adam, 1854-1913; Heape, Walter, 1855-1929. London ; New York : Macmillan
Size: 1598px × 1563px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpubli, booksubjectembryology
