. The elements of embryology . Embryology. VIII.] THE BULBUS ARTERIOSUS. 261 right chamber. This is caused by the canal from the right ventricle into the bulbus arteriosus passing to- wards the left, and on the ventral side, so as entirely to conceal the origin of the canal from the left chamber of the heart. On the seventh day the bulbus arteriosus appears to come less markedly from the right side of the heart. All these changes, however, of position of the bulbus arteriosus only affect it externally; during the whole time the two chambers of the heart open respectively into the two divisions
. The elements of embryology . Embryology. VIII.] THE BULBUS ARTERIOSUS. 261 right chamber. This is caused by the canal from the right ventricle into the bulbus arteriosus passing to- wards the left, and on the ventral side, so as entirely to conceal the origin of the canal from the left chamber of the heart. On the seventh day the bulbus arteriosus appears to come less markedly from the right side of the heart. All these changes, however, of position of the bulbus arteriosus only affect it externally; during the whole time the two chambers of the heart open respectively into the two divisions of the bulbus arteriosus. The swelling of the bulbus is much less marked on the seventh day than it was before. At the end of the sixth day, and even on the fifth day (Figs. 84, 85), the appearance of the heart itself, Fig. Hbakx op a Chick dpon the Sixth Day of Incubation, PROM THE Ventral Surpace. left auricular appendage, right auricular appendage. right ventricle, left ventricle. 6. bulbus arteriosus. without reference to the vessels which come from it, is not very dissimilar from that which it presents when 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 Foster, M. (Michael), Sir, 1836-1907; Balfour, Francis M. (Francis Maitland), 1851-1882; Sedgwick, Adam, 1854-1913; Heape, Walter, 1855-1929. London ; New York : Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, bookpubli, booksubjectembryology
