. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. 264. FIG. 265. FIG. 264.—Two stages in the development of the lung of the pig, ventral views, after Flint. A, pig 5 mm. long; B, mm. long, b, gill pouch; d, I, v, dorsal, lateral and ventral bronchi; oe, oesophagus; t, trachea. FIG. 265.—Scheme of mammalian lung structure, ad, alveolar duct; b, bronchus; //, bronchiole; i, infundibulum lined with alveoli. By a continuation of this process tertiary and other bronchi are out- lined, and also slender tubes, the bronchioles, to be described later, which c
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. 264. FIG. 265. FIG. 264.—Two stages in the development of the lung of the pig, ventral views, after Flint. A, pig 5 mm. long; B, mm. long, b, gill pouch; d, I, v, dorsal, lateral and ventral bronchi; oe, oesophagus; t, trachea. FIG. 265.—Scheme of mammalian lung structure, ad, alveolar duct; b, bronchus; //, bronchiole; i, infundibulum lined with alveoli. By a continuation of this process tertiary and other bronchi are out- lined, and also slender tubes, the bronchioles, to be described later, which connect the terminal vesicles with the ultimate bronchi. Next, the inner wall of each vesicle becomes divided into small chambers, the alveoli, the whole vesicle now being known as an infundibulum. The result of these many divisions is an enormous amount of internal respiratory surface without great increase in the size of the whole organ. It is to be noticed that in this subdivision the entodermal li- ning takes the initiative, the outer (serous) surface showing but slight signs of the internal modifications. Each infundibulum has its own duct which, when smooth internally, is called a bronchiole, when lined with alveoli, an alveolar 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 Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
