. The comparative anatomy of the domesticated animals. Veterinary anatomy. 502 THE CIBCJLATOBT APPABATVS. These two faces respond, through the medium of the pericardium, to the plurcB and the pulmonary lobes; the latter separate them from the thorax, ex- cept towards the middle and apex of the organ, where these faces come directly in contact with the thoracic parietes through the notch at the inferior border of the lung, and which we know is more in the left than the right. The borders are thick, smooth, and rounded. The anterior, formed by â. ^ g the right ventricle, is very '^' &quo
. The comparative anatomy of the domesticated animals. Veterinary anatomy. 502 THE CIBCJLATOBT APPABATVS. These two faces respond, through the medium of the pericardium, to the plurcB and the pulmonary lobes; the latter separate them from the thorax, ex- cept towards the middle and apex of the organ, where these faces come directly in contact with the thoracic parietes through the notch at the inferior border of the lung, and which we know is more in the left than the right. The borders are thick, smooth, and rounded. The anterior, formed by â. ^ g the right ventricle, is very '^' " â oblique from above to below, and before to behind ; it then inclines on the sternum more or less, according to the sub- jects. Thej3osienW border, much shorter than the anterior, is nearly vertical. Superiorly, it is separated from the dia- phragm by the lung; but, below, it is quite close to that muscular septum. The apex, or point of the ventricular cone, is blunt, slightly rounded, turned to the left, and formed entirely by the left ventricle. The base responds on the right, in front, and behind, to the auricular mass; it gives exit on the left; and a little in front, to the two arterial aortic and pulmonary trunks. B. AuEiouLAR Mass.â Elongated from before to be- hind, disposed like a crescent above the right side of the base of the ventricles, con- stricted in its middle part, on the limit of the two auri- cles, the auricular mass pre- sents for study three faces, two extremities, and a base. Tlie superior face is di- vided by a middle constric- tion into two convex sections, each of which corresponds to an auricle. The anterior, or sprtion nf fii^ + â â¢, "S^* section, shows the in- thft of ?L . r ^'"^ '^^l ^""^ ^""^ ''='yg°^' *^^ posterior, or left, that ot the pulmonary vems. The trachea, bronchi, and pulmonarv arterv pass above this face (Figs. 258, 259). puimonary artery /u^-T^^vt^l/"''^'*^'* "°^* extensive in t
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