Kidney of the great Indian rhino Rhinoceros unicornis, Linnaeus

The American Journal of Anatomy
N S Maluf

Abstract

The kidney of R. unicornis has almost 80 closely apposed lobes, all appearing peripherally. Every lobe, almost enclosed by a collagenous septum, resembles a deformed truncated cone. The pelvis proper is a small pouch which divides into a cephalic and a caudal urothelial-lined fibromuscular conduit. The terminal collecting ducts of every lobe open into a tubus maximus. This is lined by cuboidal cells and otherwise has no wall. There is no papilla. All lobes finally empty through the 18 primary infundibular orifices at the pelvic conduits. A primary fibromuscular infundibulum typically yields a secondary one supplying an adjacent lobe. Two or three lobes can use a common tubus maximus by "convergence" of their medullae. Tubus maximus, terminal collecting ducts and deep outer medulla are embraced by a fibromuscular calyx which is the peripheral extension of an infundibulum and is fused to the outer medulla. There is thus no vault between medulla and calyx. Large intralobar veins are fused to the outer wall of the calyx. The possible significance of this is discussed. The cortex is the only part of a lobe which has contact with infundibulum, pelvic conduits, or pelvis proper. The kidney has about 16 million glomeruli which form 5.8...Continue Reading

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Citations

Sep 27, 2008·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Molly B HaffeyMonica A Stoops
Sep 1, 1994·Anatomia, histologia, embryologia·N S Maluf
Jun 1, 1987·The British Journal of Radiology·S S UpadhyayA Moulton
Apr 1, 1989·The American Journal of Anatomy·N S Maluf
Mar 1, 1991·The American Journal of Anatomy·N S Maluf
Sep 1, 1991·The Anatomical Record·N S Maluf
Aug 1, 1995·The Anatomical Record·N S Maluf
Dec 1, 1993·Journal of Morphology·N S R Maluf
Nov 3, 2005·Medical Hypotheses·Marcel F Williams

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