. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. Heart of T^studij {jrcica 336 that of the left. The relative position of the origins of the three arteries from the chelonian ventricle is shown in fig. 336, where P is the pulmonary, a the left aorta, a' the right aorta, the most posterior, or dorsal, of the three arteries. The ventricle is almost wholly occupied by a spongy muscular structure, and the cavities are smaller in Testudo than in ISmi/s. The left auricle, fig. 336, M, receives the arterial blood from the lungs by a single vein, the common trunk of the ])ulmo
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. Heart of T^studij {jrcica 336 that of the left. The relative position of the origins of the three arteries from the chelonian ventricle is shown in fig. 336, where P is the pulmonary, a the left aorta, a' the right aorta, the most posterior, or dorsal, of the three arteries. The ventricle is almost wholly occupied by a spongy muscular structure, and the cavities are smaller in Testudo than in ISmi/s. The left auricle, fig. 336, M, receives the arterial blood from the lungs by a single vein, the common trunk of the ])ulmonary veins, ib. I, I: it opens into the back part of the auricle near the septum, and is guarded by a single oblique membranous fold, ib. m. Each auriculo-ventricular orifice is guarded by a fold which extends across it from either side of the base of the inter- auricular septum ; to that of the left auricle a small part of the muscular structure is attached by chordas tcndineje. Opposite to the right valve a semilunar ridge projects, in Testudo indica, which is the rudiment of the second auriculo-ventricular valve in the Cro- codile, and of the fleshy valve of tliat orifice in the right ventricle. StrucLure of auricles: heart of C7ic/j/s fimbriata. 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 Owen, Richard, 1804-1892; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. London, Longmans, Green
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