. A manual of zoology. 47S MANUAL OF ZOOLOGY SECT. The right auricle receives the right and left pre-cavals (r. pre, I. pre) and the post-caval (ptc), the left, four large pulmonary veins (p. v). The left ventricle (Fig. 288, /. vn), as in the crocodile, gives origin to the right aortic arch (a. no), but the right ventricle (r. vn) gives off only one trunk, the pulmonary artery, which soon divides into two. 7\Z72- Fig. 288. — A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery: br. v, brachial vein; c. c, common carotid; , jugular; , left auricle; /. /. (
. A manual of zoology. 47S MANUAL OF ZOOLOGY SECT. The right auricle receives the right and left pre-cavals (r. pre, I. pre) and the post-caval (ptc), the left, four large pulmonary veins (p. v). The left ventricle (Fig. 288, /. vn), as in the crocodile, gives origin to the right aortic arch (a. no), but the right ventricle (r. vn) gives off only one trunk, the pulmonary artery, which soon divides into two. 7\Z72- Fig. 288. — A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery: br. v, brachial vein; c. c, common carotid; , jugular; , left auricle; /. /. (7, left pulmonary artery; / 7'n, left ventricle; pc. v, left pre- caval; ptc, post-caval; p. v, pulmonary veins; r. au. , right auricle; r />. a, right pulmonary artery; r. pre, right pre-caval; r. vil, right ventricle. B, heart of a bird with the richt ventricle opened. L. V, septum ventriculorum; R. V, right ventricle: V, right auriculo-ventricular valve. (A,from Parker's Zootomy; P.," from Headley's Birds.) ( a., a). The left aortic arch is absent in the adult, and it is the right alone which is continued into the dorsal aorta. The result of this is that the systemic arteries re- ceive pure arterial blood from the left side of the heart, and the only mingling of aerated and non-aerated blood is in the. 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1900
