Veterinary obstetrics, including the diseases of breeding animals and of the new-born . acral yerte^brae, varying in number in the different species of domestic ani-mals ; in the horse and ruminants five, in the pig four, and incarnivora three. In sagitttal .section it presents the form of a truncated conewith its base articulating anteriorly with the last lumbar verte-bra and its apex posteriorly with the first coccygeal bone, In cross section it is triangular, with its base inferior. Thelateral surfaces offer roughened facets for articulation with the3 4 Vetcnnary Obstetrics coxae. The infer
Veterinary obstetrics, including the diseases of breeding animals and of the new-born . acral yerte^brae, varying in number in the different species of domestic ani-mals ; in the horse and ruminants five, in the pig four, and incarnivora three. In sagitttal .section it presents the form of a truncated conewith its base articulating anteriorly with the last lumbar verte-bra and its apex posteriorly with the first coccygeal bone, In cross section it is triangular, with its base inferior. Thelateral surfaces offer roughened facets for articulation with the3 4 Vetcnnary Obstetrics coxae. The inferior surface contributes to the formation of thepelvic roof, is concave from before to behind, essentially planefrom side to side and shows transverse lines of demarcation be-tween the individual vertebrae in the form of ridges varying inprominence with species, age, breed and individual. It is allegedthat the sacrum varies according to sex, the articular elevationsbeing, it is claimed, less prominent in the female. We have notbeen able to verify this claim by the study of Fig. I. Sagittal Section of the Pelvis ok the Mare, SHOWING HMHO-SaCRAL NERVES. S, First sacral vertebra. L, Last lumbar vertebra. A, Last lumbarnerve, passing passing over lumbo-sacral eminence. E, Gluteal , Obturator nerve entering foramen. The spinal canal extends through the .sacrum and is occu-pied by the terminal nerves of the spinal cord. The inferior sur-face of the bone shows a series of paired openings, through whichthe sacral nerves emerge to take a prominent part in the forma-tion of the plexus. Most of these emerge in sucli a The Pelvis 5 manner as to render mechanical injur} to them during parturi-tion very improbable, while others, especially the anterior glutealand obturator nerves from the last lumbar pair. Fig. i, have topass over a promontory marking the lumbo-sacral articulation atA, in such a manner that they may be, and not .rarely are,crushed between* th
Size: 1811px × 1380px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectveterinaryobstetrics
