. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 76 ORGANIZATION A:'D DEVELOPMENT OF ANIMALS IS GENERAL. openings which are usually common to the generative organs; they consist essentially of a number of coiled tubes, which in the more primitive types of Vertebrates have a ciliated funnel-shaped opening into the t body cavity (Dogfish embryo, fig. 71). The individual tubules of which the verte GK FIG. 69.—Longitudinal section through the medicinal Leech (after R. Leuckart). A ali- mentary canal; 0, brain; Ok, ventral chain cf ganglia ; E
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 76 ORGANIZATION A:'D DEVELOPMENT OF ANIMALS IS GENERAL. openings which are usually common to the generative organs; they consist essentially of a number of coiled tubes, which in the more primitive types of Vertebrates have a ciliated funnel-shaped opening into the t body cavity (Dogfish embryo, fig. 71). The individual tubules of which the verte GK FIG. 69.—Longitudinal section through the medicinal Leech (after R. Leuckart). A ali- mentary canal; 0, brain; Ok, ventral chain cf ganglia ; Ex, excretory canals (seg- mental organs, water- vascular system).. FIG. 70.—Diagrammatic representation, of the segmental organs of a segmented worm (after C. Semper). Da, dissepi- ment ; Wtr, ciliated funnels which lead into the coiled tubes. Lrate kidney is composed do not open directly to the exterior, as do the segmental organs of Annelids, but there is present on each side of the body a duct, the kidney duct, which receives the tubules of its own side and opens posteriorly into the cloaca. They also possess an important structure peculiar to the kidney of the Vertebrata known as the " Malpighian body," which consists of a capsular widening of the lumen of each. 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 Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.
Size: 1238px × 2017px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1890
