. Dadd's theory and practice of veterinary medicine and surgery. Veterinary medicine. THE HEART—ITS FUNCTION AND DISEASES. 541 blood which has circulated through the heart itself for its own nourishment. A considerable quantity of dark, venous blood is generally found in this auricle after death, and it opens into the right or anterior ventricle by an aperture denominated the au- riculo-ventricular opening; yet, in consequence of a valvular con- trivance within the ventricle, the blood can not recede into the the heart; its circulation. Explanation.—a, The left ventricle; 6, The righ


. Dadd's theory and practice of veterinary medicine and surgery. Veterinary medicine. THE HEART—ITS FUNCTION AND DISEASES. 541 blood which has circulated through the heart itself for its own nourishment. A considerable quantity of dark, venous blood is generally found in this auricle after death, and it opens into the right or anterior ventricle by an aperture denominated the au- riculo-ventricular opening; yet, in consequence of a valvular con- trivance within the ventricle, the blood can not recede into the the heart; its circulation. Explanation.—a, The left ventricle; 6, The right ventricle; cef, The aorta; ghi, The ca- rotid and other arteries springing from the aorta; k, The pulmonary artery ; /, Branches of the pulmonary artery in the lungs ; m m, The pulmonary veins emptying into the left auricle; n, The right auricle; o, The ascending vena cava; q, The descending vena cava ; r, The left auricle; s, The coronary vein and artery. Internally, the right auricle is lined by a glistening vascular membrane, having, on various parts of its surface, small muscular eminences, termed musculi pectinati. The small cavities which occur, in consequence of this arrangement, are termed cul-de-sacs. The right or venous ventricle is also lined by a nicely-organized membrane, and has beneath it several muscular prominences, named carnce columnce, which give origin to as many tendinous. 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 Dadd, George H. , b. 1813. [from old catalog]. Cincinnati, R. W. Carroll & co.


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