. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. Cnitlllaries with blnod-Jiecs of tlie ^veb of the foot, Frog, magu. CCLXVII. 331 the eye the circulatory motion of the blood, flowing constantly from the arteries to the veins, as seen, e. g. by transmitted light in a membranous part of the frog's or newt's struc- ture, under the micro- scope, fig. 330. The venous system of Batrachians resembles that of Fishes in the degree in which the species retain the piscine character. The cardinal veins, essentially those which return the blood from the osseous and muscular segment
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. Cnitlllaries with blnod-Jiecs of tlie ^veb of the foot, Frog, magu. CCLXVII. 331 the eye the circulatory motion of the blood, flowing constantly from the arteries to the veins, as seen, e. g. by transmitted light in a membranous part of the frog's or newt's struc- ture, under the micro- scope, fig. 330. The venous system of Batrachians resembles that of Fishes in the degree in which the species retain the piscine character. The cardinal veins, essentially those which return the blood from the osseous and muscular segments of the trunk, are largest in the Perennibranchs, and de- crease, as the hind-Hmbs acquire more size and power, in the Newts and Land-Salamanders, until, in the tail-less and long- legged Frogs and Toads, the primitive venous trunk of the body is reduced to the condition of the 'azygos' vein in Mammals, and the great bulk of the blood is submitted to the influence of the kidneys and liver before it is re- turned to the heart. In the Frog, fig. 331, the blood being collected from each liind-limb into an is- chiadic and iliac vein, these unite into a common iliac vein, winch divides. One branch joins that of the opposite iliac, and receives the vein of the great allan- toic bladder, to form the unil)ilical vein,' fig. 331, u: the other branch, K, goes to the. CircahiUdii hi (lie Frog. 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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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
