. The anatomy of the domestic animals . Veterinary anatomy. Fig. 500.âCast of Right Renal Pelvis (a), Re- cesses (c, cO, AND Origin of Ureter (6)'of Horse. (After Dumont.) Fig. 501.âCast of Left Renal Pelvis (a), Recesses (c, c'), AND Origin of Ureter (6) of Horse. (After Dumont.) circular fibers. The mucous coat does not cover the renal crest nor is it continued into the diverticula of the pelvis. It has a yellowish tinge, and forms numerous folds. It contains compound tubular glands (Glandulse pelvis renalis), which secrete the thick, viscid mucus always found in the pelvis.^ Renal Tubules.â
. The anatomy of the domestic animals . Veterinary anatomy. Fig. 500.âCast of Right Renal Pelvis (a), Re- cesses (c, cO, AND Origin of Ureter (6)'of Horse. (After Dumont.) Fig. 501.âCast of Left Renal Pelvis (a), Recesses (c, c'), AND Origin of Ureter (6) of Horse. (After Dumont.) circular fibers. The mucous coat does not cover the renal crest nor is it continued into the diverticula of the pelvis. It has a yellowish tinge, and forms numerous folds. It contains compound tubular glands (Glandulse pelvis renalis), which secrete the thick, viscid mucus always found in the pelvis.^ Renal Tubules.âThe parenchyma or proper substance of the kidney is composed of the small renal or uriniferous tubules (Tubuli renales), which are very close together and have a complicated com-se. Each tubule begins in a thin-walled, spherical dilatation or capsule (Cap- sula glomeruli), which is invaginated to receive a tuft of looped capillaries termed a glomerulus; these two structures constitute a renal corpuscle; the corpuscles are visible as minute red or dark spots in the convoluted part of the cortex. Succeeding this is a short narrow neck, beyond which the tubule becomes wide and convoluted, forming the proximal convoluted tubule, and enters the radiate portion of the cortex. It then gradually narrows and enters the intermediate â zone; becoming very narrow and nearly straight, it descends for a variable distance into the medul- lary substance, turns sharply upon itself, and returns to the cortex, forming thus the loop of Henle, with its descending and ascending limbs. In the convoluted part of the cortex it widens and becomes tortuous, constituting the distal convoluted tubule. The tubule then narrows, enters a medullary ray, and opens with other tubules into a straight collecting tubule; this passes axially through a pyramid, and unites with other collecting tubules to form the relatively large papillary ducts, which open into the renal pelvis. Stroma.âThe interstitial tissue
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