. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 46 THE BONES. immediately directed backwards ; in the middle portion of this region these processes are very obliquely directed downwards and backwards. 3. Lumbar vertehrx.—The lumbar vertebrae are the strongest bones in the apine, and their bodies are nearly as thick as those of the larger domesti- Fig. 2G. cated animals. This enormous development of the lumbar vertebrae in Man is related to his position as a biped. In the fifth, the lower face of the body is cut very obliquely backwards and upwards, and the tr
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 46 THE BONES. immediately directed backwards ; in the middle portion of this region these processes are very obliquely directed downwards and backwards. 3. Lumbar vertehrx.—The lumbar vertebrae are the strongest bones in the apine, and their bodies are nearly as thick as those of the larger domesti- Fig. 2G. cated animals. This enormous development of the lumbar vertebrae in Man is related to his position as a biped. In the fifth, the lower face of the body is cut very obliquely backwards and upwards, and the transverse processes are more voluminous than those of the other lumbar vertebrae. 4. Sacrum.—The sacrum is formed by the union ot five pieces. It is very concave from alx)ve to below and before to behind. In becoming united to the lumbar region, it forms a salient angle in front, to which has been given Xheuameo^promontvry ox sacro-vertebral angle. The sacral spine is continuous or interrupted, according to the subject; it is always bifid inferiorly. 5. Coccygeal vertebras.—These are little bones or flat- tened tubercles, four in number, rarely five, and usually consolidated. The coccyx is conical in shape. Its base shows two processes directed upwards, which are called the cornua of the coccyx. Its summit is often deviated to the right or left. Article II.—The Head (Fig. 26). The head is a large, bony, quadrangular pyramid, elongated from above to below, sus- pended by its base to the anterior extremity of the spine. Its direction varies with the atti- tudes of the animal, but we will suppose it, for convenience of description, to be nearly verti- cal. It is formed of a great number of particular bones, which are only distinct from one another in very young animals ; for well before the adult period is reached, the majority of the bones are united and cannot be separated. The head is divided into two parts : the cranium and the house's head (front view) 1, Occipi
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