. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. Fig. 99.—A, A Vertebra at Birth; B, Lumbar Vertebra showing Secondary Centers of Ossification. a, Center for the articular process; c, body; el, lower epiphysial plate; en, upper epiphysial plate; na, vertebral arch; s, center for spinous process; t, center for transverse process.—(Sappey.) from a single center. These various centers appear early in embry- onic life, but the complete transformation of the cartilages into bone does not occur until some time after birth, each vertebra at that p
. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. Fig. 99.—A, A Vertebra at Birth; B, Lumbar Vertebra showing Secondary Centers of Ossification. a, Center for the articular process; c, body; el, lower epiphysial plate; en, upper epiphysial plate; na, vertebral arch; s, center for spinous process; t, center for transverse process.—(Sappey.) from a single center. These various centers appear early in embry- onic life, but the complete transformation of the cartilages into bone does not occur until some time after birth, each vertebra at that period consisting of three parts, a body and two halves of an arch, separated by unossified cartilage (Fig. 99, A). At about puberty secondary centers make their appearance; one appears in the carti- lage which still covers the anterior and posterior surfaces of the vertebral body, producing disks of bone in these situations (Fig. 99,. 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 McMurrich, J. Playfair (James Playfair), 1859-1939. Philadelphia : P. Blakiston's son & co.
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Keywords: ., bookautho, bookcentury1900, bookdecade1910, booksubjectembryology
