. Principles of veterinary science; a text-book for use in agricultural schools. Veterinary medicine. THE CIRCtTLATORY SYSTEM 127 of the heart of the horse is 7J^ pounds; of the ox 5j^ pounds. This difference is in keeping with the character of the work performed by each animal. The pericardium, a fibrous sac lined with a serous membrane, surrounds the heart. In it is found a characteristic secretion, the pericardial Pulmonary veins Pulmonary £zz \ Posterior vena cava Lejt atrium Fig. 40.—Base of heart of horse, with large vessels, photograph of specimen hardened in situ. (Sisson, Anat


. Principles of veterinary science; a text-book for use in agricultural schools. Veterinary medicine. THE CIRCtTLATORY SYSTEM 127 of the heart of the horse is 7J^ pounds; of the ox 5j^ pounds. This difference is in keeping with the character of the work performed by each animal. The pericardium, a fibrous sac lined with a serous membrane, surrounds the heart. In it is found a characteristic secretion, the pericardial Pulmonary veins Pulmonary £zz \ Posterior vena cava Lejt atrium Fig. 40.—Base of heart of horse, with large vessels, photograph of specimen hardened in situ. (Sisson, Anatomy of Domestic Animals.) When the heart is opened by incisions for inspection it is seen to present four cavities—the right and left auricles and the and the left ventricles (Fig. 41). The two cavities of one side are partitioned off from those of the other by a septum of fibro- muscular composition that keeps the pure and impure blood separated. The right anterior part of the base of the heart is formed by the right auricle. It has orifices for the anterior Digitized by Microsoft®. 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 Hadley, Frederick Brown, 1880-. Philadelphia and London, W. B. Saunders Company


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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1920