. The elements of embryology . Embryology. THE SKULL. 401 the intervertebral regions it remains relatively uncon- stricted (Figs. 134 and 135 c) and after undergoing certain histological changes remains through life as part of the nucleus pulposus in the axis of the intervertebral ligaments. There is also a slight swelling of the noto- chord near the two extremities of each vertebra (Fig. 135 c' and c"). 'â In the persistent vertebral constriction of the notochord Mammals retain a more primitive and piscine mode of formation of the vertebral column than the majority either of the Ee
. The elements of embryology . Embryology. THE SKULL. 401 the intervertebral regions it remains relatively uncon- stricted (Figs. 134 and 135 c) and after undergoing certain histological changes remains through life as part of the nucleus pulposus in the axis of the intervertebral ligaments. There is also a slight swelling of the noto- chord near the two extremities of each vertebra (Fig. 135 c' and c"). 'â In the persistent vertebral constriction of the notochord Mammals retain a more primitive and piscine mode of formation of the vertebral column than the majority either of the EeptUia or Amphibia. Fio. Longitudinal Section theotjgh the VbrtebeaIi Column OF AN Bight Weeks' Human Embryo in the Tho- EACIC Bbgion. (From KbUiker.) V. cartilaginous vertebral body; U. intervertebral ligament; ch. notochord. The skull. Excepting in the absence of the inter- orbital plate, the early development of the Mamma- lian cranium resembles in aU essential points that of Aves, to our account of which on p. 235 et seq. we refer the reader. F. & B. 26. 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: 1095px × 2283px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpubli, booksubjectembryology
