. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. 428 AND MORPHOLOGY OF ANIMALS. tubes, branching and becoming more numerous, but the branches lie parallel, and give rise to a radiating ar- rangement. In the cortical portion, on the contrary, the tubes are much convoluted, and finally terminate each in a vesicle, which is filled with a tuft of capillary blood vessels, looping round and connecting with an arteriole on the one ha?id and with a veinlet on the other (Fig. 298). Blood vessels are. Fig. 298.—Uriniferous tub
. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. 428 AND MORPHOLOGY OF ANIMALS. tubes, branching and becoming more numerous, but the branches lie parallel, and give rise to a radiating ar- rangement. In the cortical portion, on the contrary, the tubes are much convoluted, and finally terminate each in a vesicle, which is filled with a tuft of capillary blood vessels, looping round and connecting with an arteriole on the one ha?id and with a veinlet on the other (Fig. 298). Blood vessels are. Fig. 298.—Uriniferous tubules : m, Malpighian corpuscles ; gl, glom- erules. Fig. 299.—Uriniferous tubule : ut, with its Malpighian corpuscle and glomerule ; a, arteriole; v, veinlet. also abundantly distributed among the tubules. These terminal vesicles are the Malpighian corpuscles, and the contained vascular tufts glomerules. Now, as in all eliminative organs, so here the whole is lined throughout with epithelial cells (Fig. 299). The epithelial membrane passes from the surface up the ure- thra into and lines the bladder; from the bladder it passes up the ureters and covers the pelvis. It then passes up and lines the tubules and their terminal vesi-. 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 LeConte, Joseph, 1823-1901. New York, D. Appleton and Company
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