Anatomical and Morphological Study of the Kidneys of the Breeding Emu (Dromaius Novaehollandiae)
Turkish Journal of Zoology Turk J Zool (2016) 40: 314-319 http://journals.tubitak.gov.tr/zoology/ © TÜBİTAK Research Article doi:10.3906/zoo-1506-21 Anatomical and morphological study of the kidneys of the breeding emu (Dromaius novaehollandiae) 1, 2 3 2 3 Katarzyna MICHAŁEK *, Danuta SZCZERBIŃSKA , Marta GRABOWSKA , Danuta MAJEWSKA , Maria LASZCZYŃSKA 1 Department of Physiology, Cytobiology, and Proteomics, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Szczecin, Poland 2 Department of Poultry and Ornamental Bird Breeding, West Pomeranian University of Technology in Szczecin, Szczecin, Poland 3 Department of Histology and Developmental Biology, Pomeranian Medical University, Szczecin, Poland Received: 15.06.2015 Accepted/Published Online: 05.01.2016 Final Version: 07.04.2016 Abstract: We analyzed 16 kidneys obtained from 15-year-old emus, Dromaius novaehollandiae. Emus were kept at an experimental farm in Poland. The results showed that each kidney was composed of 3 parts: cranial, medial, and caudal divisions. Histological results demonstrated that the kidneys consisted of 2 zones: the cortex and the medulla. The cortex made up the majority of the kidney, while the medulla formed only a small portion of the organ. Proximal and distal tubules and 2 types of glomeruli (looped and loopless) were localized in the cortex. Each of these glomeruli was characterized by tightly arranged mesangial cells. Proximal and distal tubules had a distinctive simple low cuboidal epithelium. The luminal surface of the proximal tubules had a brush border membrane, formed by numerous microvilli. The renal medulla of emu kidneys formed irregularly positioned characteristic cones of different sizes.
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