. A laboratory manual and text-book of embryology. Embryology. Trachea. RespiraTory anlage Esophagus D Trachea. Apical bud Primary bronchus Esophagus. Trachea. Bronchus Ventral bud Fig. 165.âDiagrams of stages in the early development of the trachea and lungs of human embryos (based on reconstructions by Bremer, Broman, Grosser, and Naroth). A, mm.; B, 4 mm.; C, B in side view; D, 5 mm.; E, 7 mm. which becomes larger and rounded at its caudal end (Fig. 165). The laryngo- tracheal groove and the ridge are the anlages of the larynx and trachea. The rounded end of the ridge is the unpaired an
. A laboratory manual and text-book of embryology. Embryology. Trachea. RespiraTory anlage Esophagus D Trachea. Apical bud Primary bronchus Esophagus. Trachea. Bronchus Ventral bud Fig. 165.âDiagrams of stages in the early development of the trachea and lungs of human embryos (based on reconstructions by Bremer, Broman, Grosser, and Naroth). A, mm.; B, 4 mm.; C, B in side view; D, 5 mm.; E, 7 mm. which becomes larger and rounded at its caudal end (Fig. 165). The laryngo- tracheal groove and the ridge are the anlages of the larynx and trachea. The rounded end of the ridge is the unpaired anlage of the lungs. â Externally two lateral longitudinal grooves mark off the dorsal esophagus from the ventral respiratory anlages. The lung anlage rapidly increases in size and becomes bilobed in embryos of 4 to 5 mm. The lateral furrows become deeper caudad and a septum is formed which grows cephalad, separating first the lung anlages and then the tracheal tube from the esophagus. At the same time the laryngeal portion of the groove and ridge is developed cranially until it lies be- tween the third and fourth branchial arches (Fig. 82). At 5 mm. the respiratory. 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 Prentiss, Charles William, 1874-1915. Philadelphia, London, W. B. Saunders
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectembryology, bookyear1
