Morphological description and histological structure of the Hedgehog Kidney (Hemiechinus auritus)
Main Article Content
Abstract
This study was aimed to recognize the morphological description and histological structure of the kidney in hedgehog (Hemiechinus auritus). The morphological results showed that the kidney has a small bean shape and reddish brown color. It was situated on both side of the anterior lumbar vertebra in the abdominal cavity behind the peritoneum. The kidney was surrounded by connective tissues capsule. Histological results clarify that the kidney was characterized by two an regions, outer called cortex and inner called medulla. Glomeruli densely distributed in the cortex region with mean diameter of 78 µm, also the cortex contains segments of proximal convoluted tubules and distal convoluted tubules. On the other hand the medulla region consist of both thick and thin segments of Henle’s loop in addition to sections of collecting tubules which forms radial structures which are known as the medullary rays. The histological results also showed that, the renal corpuscle is formed by the glomeruli that is surrounded by Bowman’s capsule, the proximal convoluted tubules, Henle’s loop, the distal convoluted tubules and collecting tubules. The proximal convoluted tubules connected with Bowman’s capsule and lined by simple cuboidal epithelial tissue based on a basement membrane while the free surface was covered with brush border. The results demonstrated that thin segments of the Henley’s loop were started from the end of the proximal convoluted tubule, extend inside of the medulla and lined by simple squamous epithelial tissue. Whilst the thick segments of the Henle’s loop were lined by simple cuboidal epithelial tissue. The current study clarify that, the distal convoluted tubules were lined by simple cuboidal epithelium rested on basement membrane and the free surface covered by small protrusions. Furthermore, the histological examination revealed that the collecting tubules were lined by simple cuboidal epithelium and the free surface of its cells had a cover of a few and short protrusions.
Article Details

This work is licensed under a Creative Commons Attribution 4.0 International License.
Tikrit Journal of Pure Science is licensed under the Creative Commons Attribution 4.0 International License, which allows users to copy, create extracts, abstracts, and new works from the article, alter and revise the article, and make commercial use of the article (including reuse and/or resale of the article by commercial entities), provided the user gives appropriate credit (with a link to the formal publication through the relevant DOI), provides a link to the license, indicates if changes were made, and the licensor is not represented as endorsing the use made of the work. The authors hold the copyright for their published work on the Tikrit J. Pure Sci. website, while Tikrit J. Pure Sci. is responsible for appreciate citation of their work, which is released under CC-BY-4.0, enabling the unrestricted use, distribution, and reproduction of an article in any medium, provided that the original work is properly cited.
References
1. Qumsiyeh, M. D., (1996), “Mammals of the Holy
Land”, Texas Tech University Press Lubbock, Texas,
Page 65.
2. Farquhar, M. G.; Wissing, S. L. and palade, G. E.
(1999). “Glomerular permeability ferritintransfer
across the normal glomerular capillary wall”, J. Am.
Soc Nephrol., 10:2645-2662.
3. Balinsky, B. I. (1981). An Introduction to
embryology (5th ed). W.B. Saunders Co. London
4. Ganong, W. F. (2005), “Review of medical
physiology”, 2nd ed. Lange Medical Books. McGraw-
Hill Boston, Toronto, New York, New Jersey. P: 467-
513.
5. Ashdown R. R., Stanley H.D., Evans S.A. and
Baines E.A. (2011), "Color atlas of veterinary
anatomy", 2nd ed. Mosby .London .pp:167.
6. Martinoli, C.; Bertolotto, M.; Peretolesi, F.;
Crepsi, G. and Dorchi, L. (1999), "Kidney Normal
anatomy", Eur. Radiol., 3:389-393.
7. Watson, R., (2000), "Anatomy and physiology for
nurse", 11th ed. Elsevier science, China:303-340.
8. Dyce, K.; Sack, W. and Wensing, C., (2010),
"The urogenital apparatus. In: Textbook of
Veterinary Anatomy", 4th edition, W. B. Saunders
Company.
9. Junqueira, L. and Carneiro, J., (2005), "Basic
histology", 11th ed. McGraw-Hill. Mexico, New
Delhi, Sydney, Toronto.
10. Bancroft J. D., and Stevens A., (1982), “Theory
and practice of histological techniques”, Churchill
living stone, London, 2nd edition, Page: 662.
11. Bancroft J. D., and Gamble M., (2008), “Theory
and Practices of Histological Technique”, 16th
edition. Churchill Livingstone, Elsevier, Philadelphia,
Page: 56.
12. Kent, G. C. and Carr, R. K. (2001). Comparative
anatomy of the vertebrata, (9th ed.) McGraw Hill,
New York
13. Nabipour, A. (2008). Histological structure of the
kidney of Insectivorous Bats. World j. zool., 3(2):59-
62
14. Onyeanusi, B. I.; Adeniyi, J. O.; Ibe, C. S. and
Onyeanusi, C. G. (2009). Comparative study of the
urinary system of the African Giant rat (cricetomys
gambianus waterhous) and he Wistal rat. Pakistan
Jor. of Nutrition., 8(7):1043-1047.
16. Bacha, W. J. and Wood, J. L. M (1990). Color
atlas of veterinary histology. Lea & Febiger,
Philadelphia
17. Samuelson, D. A (2007): Textbook of veterinary
histology. Saunders, St. Louis
18. El-salkh, B. A.; Zaki, Z. T.; Basuony, M. I. and
Khidr, H. A. (2008). Anatomical, Histological and
histochemical studies on some organs of true desert
rodents in the Egyptian Habitats. The Egyptian
journal of hospital medicine, (33):587-603.
19. Al-Samawy, E. R. M., (2012), Morphological and
histological study of the kidney in the Albino rats, Al-
Anbar jor. vet. sci., 5(1):115-119.
20. Eurell, J. A. and Frappier, B. L. (2006):
Dellmann’s Textbook of veterinary histology.
Blackwell Publishing, Sixth Edition, Ames, USA.
21. Carpenter, S. (2003). Avian urinary system
volume 3, issue 2: 171-199
22. Barbara, Y. and John, W. H. (2000). Functional
histology text and colour atlas, third edition, London
New York. Academic press : 286-290
23. Tisher, C. C. (1971). Relationship between renal
structure and concentrating ability in the rhesus
monkey Am. J. physiol. , 200: 1100-1106
24. Patil, K. G. and Janbandhu, K. S. (2011).
Developmental stages of Metanephros in Indian false
vampire Megaderma Lyra Lyra (Geoffrey) chiroptera,
Mammalia. Journal of Multidisciplinary, 1:1-9
25. Nabipour, A. (2008). Histological structure of the
kidney of Insectivorous Bats. J. Zool. London, 3(2):
59-62
27. Diaz, G. B. and Ojeda, R. A. (1999). Kidney
structure and allometry of Argentine desert rodents.
Journal of Arid Environments, 41:453-461
28. Al-Azawy, N. H. (2005). Comparative anatomical
and histological study of kidney in domestic fowls
and geese (Gallus domesticus and Anser anser). M.
Sc. Thesis, College of Veterinary Medicine, Baghdad
University.