. The cat : an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. Fig. 14 —Tooth Substances. A Vertical section of second upper premolar. B. Horizontal section of right upper sectorial. d. Dentine, c. Cement, e. Enamel. pc. Pulp cavity. Instead, however, of presenting the lacunae and canaliculi of ordinary osseous tissue, dentine only exhibits a number (but an enormous number) of very minute and very close-set tubes, which radiate from the wall of the pulp cavity on every side and with slight undulations; they become smaller towards the outer part o
. The cat : an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. Fig. 14 —Tooth Substances. A Vertical section of second upper premolar. B. Horizontal section of right upper sectorial. d. Dentine, c. Cement, e. Enamel. pc. Pulp cavity. Instead, however, of presenting the lacunae and canaliculi of ordinary osseous tissue, dentine only exhibits a number (but an enormous number) of very minute and very close-set tubes, which radiate from the wall of the pulp cavity on every side and with slight undulations; they become smaller towards the outer part of each tooth, while at their inner ends their diameter is about the 43V0 of an inch. Each tube, as it proceeds, gives off exceedingly minute branches, which appear to anastomose, and the tubules end distally by forming loops or by opening into minute cavities (dentinal cells) which are disposed around the dentine close to its surface, forming what is called its granular layer. The greater part of the earthy matter is contained in the matrix, between the tubules, which do not in fact proceed from the pulp, but advance upon it, the outermost layer being that first calcified. The Cement closely resembles bone, since it contains both lacunas. 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 Mivart, St. George Jackson, 1827-1900. New York : Scribner's
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectanatomy, bookyear1881
