The American journal of anatomy . -f - - Entl--- -- - Ent. 3-- -- Ent. 4-- Lat. 3?Bur. Fig. 36 Lateral view. (Reference letters as in figure 34)Fig. 37 Mesial view. (Reference letters as in figure 34) very large and important part of the bronchial passages. Itssubdivisions supply the summit of the lungs (fig. 44) and alsogive rise to two air-sacs, the cervical and the lateral moiety ofthe interclavicular air-sac. Entobronchus number two (figs. 28 and 30, Ent. 2) has a simi-lar origin to that of number one. It starts about the middle o
The American journal of anatomy . -f - - Entl--- -- - Ent. 3-- -- Ent. 4-- Lat. 3?Bur. Fig. 36 Lateral view. (Reference letters as in figure 34)Fig. 37 Mesial view. (Reference letters as in figure 34) very large and important part of the bronchial passages. Itssubdivisions supply the summit of the lungs (fig. 44) and alsogive rise to two air-sacs, the cervical and the lateral moiety ofthe interclavicular air-sac. Entobronchus number two (figs. 28 and 30, Ent. 2) has a simi-lar origin to that of number one. It starts about the middle ofthe sixth day of incubation as a bud from the dorsal wall (mesialin the adult) of the intra-pulmonary bronchus. It grows rapidly,so that, at five days, twenty hours (figs. 28 and 29) it has an THE EMBRYOLOGY OF THE BIRDs LUNG 485 expanded distal end attached by a slender stalk to its point oforigin. The stalk first grows niesiad, then enlarges and bendsdorsad, and finally, expands into the distal sac mentioned expansion, like that of the first entobronchus, lies directlyabove the bronchus (fig. 29), but slightly towards the mesi
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Keywords: ., bookauthorwi, bookcentury1900, bookdecade1910, booksubjectanatomy
