. An introduction to the study of mammals living and extinct. Mammals. J)Z Fig. 9.—Anterior surface of Human thoracic vertebra (fourth), c, Body or centrum; nc, neural canal ; jj, pedicle, and I, lamina of the arch; t, transverse process ; az^ anterior zygapoplij'sis. Fig. 10.—Side view of the first lum- bar vertebra of a Dog (Cajiis familiaris). s, Spinous process ; az, anterior zygapo physis ; pz, posterior zygapophysis ; m, metapophysis ; a, anapopliysis ; t, trans- verse process. tiguous vertebrae are connected together by a very dense, tough, and elastic material called the "interver
. An introduction to the study of mammals living and extinct. Mammals. J)Z Fig. 9.—Anterior surface of Human thoracic vertebra (fourth), c, Body or centrum; nc, neural canal ; jj, pedicle, and I, lamina of the arch; t, transverse process ; az^ anterior zygapoplij'sis. Fig. 10.—Side view of the first lum- bar vertebra of a Dog (Cajiis familiaris). s, Spinous process ; az, anterior zygapo physis ; pz, posterior zygapophysis ; m, metapophysis ; a, anapopliysis ; t, trans- verse process. tiguous vertebrae are connected together by a very dense, tough, and elastic material called the "intervertebral substance," of peculiar and complex arrangement. This substance forms the main, and in some cases the only, union between the vertebrte. Its elasticity provides for the vertebrte always returning to their normal relation to each other and to the column generally, when they have been disturbed therefrom by muscular action. A process (p) arises on each side from the dorsal surface of the body. These processes, meetin" in the middle line above, form an arch, surmounting a space or short canal (nc). Since it contains the posterior prolongation of the great cerebro-spinal nervous axis, or spinal cord, this space is called the neural canal, and the arch the neural arch, in contradistinction to another arch on the ventral surface of the body of the verte- brae, called the haemal arch. The latter is, however, never formed. 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 Flower, William Henry, 1831-1899; Lydekker, Richard, 1849-1915. London, A. and C. Black
Size: 1438px × 1738px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorly, bookcentury1800, bookdecade1890, booksubjectmammals
