The Middle Ear of Ruminants: An Anatomical and Bio-Metrical Comparison between the Lori Sheep and the Native Cow in Shahrekord District
DOI:
https://doi.org/10.12970/2310-0796.2021.09.02Keywords:
Sheep, Cow, Ossicles, Middle ear.Abstract
The ossicles consist of three small bones known as the smallest bones in the body that play an important role in transmitting sound to the inner ear. In order to study the details of middle ear ossicles in Lori sheep and native cattle, bio-anatomical parameters of malleus, incus and stapes ossicles were measured. The age factor is not considered and all animals were adult. Investigations showed that there was no significant difference in the levels of the middle ear bone between the two sexes. In this study, the ossicles were carefully dissected by the appropriate devices and after separation, the ossicles were measured using caliper and digital scales. Bio-anatomical changes were evaluated under stereomicroscope magnification. The results showed that all three bones structure is similar to other animals. Biometric aspects indicated that most of the changes belonged to malleus and incus bone. After examining the two species under study, the least significant change was observed between the two animals in the stapes. In conclusion, this study was able to compare middle ear ossicles between sheep and native cattle in Shahrekord district. Anyway, it is conceivable that the biometric sizes of the middle ear bones may be affected by animal species.
References
Saha R, Srimani P, Mazumdar A, Mazumdar S. Morphological Variations of Middle Ear Ossicles and its Clinical Implications. Journal of Clinical and Diagnostic Research 2017; 11(1): AC01-AC4. https://doi.org/10.7860/JCDR/2017/23906.9147
Burda H, Bruns V, Hickman GC. The ear in subterranean insectivora and rodentia in comparison with ground-dwelling representatives. I. Sound conducting system of the middle ear. J Morphol 1992; 214(1): 49-61. https://doi.org/10.1002/jmor.1052140104
Wible JR, Gaudin TJJA-CMP. On the cranial osteology of the yellow armadillo Euphractus sexcintus (Dasypodidae, Xenarthra, Placentalia). Ann Carnegie Mus 2004; 73: 117.
Laurin M, editor The importance of global parsimony and historical bias in understanding tetrapod evolution. Part I. Systematics, middle ear evolution and jaw suspension. Annales des Sciences Naturelles-Zoologie et Biologie Animale; 1998: Elsevier. https://doi.org/10.1016/S0003-4339(98)80132-9
Clack JA, Allin E. The evolution of single-and multiple-ossicle ears in fishes and tetrapods. Evolution of the vertebrate auditory system: Springer; 2004. p. 128-63. https://doi.org/10.1007/978-1-4419-8957-4_5
Allin EF. Evolution of the mammalian middle ear. J Morphol 1975; 147(4): 403-37. https://doi.org/10.1002/jmor.1051470404
Hall BK. Evolutionary developmental biology: Springer Science & Business Media; 2012.
Fleischer G. Evolutionary principles of the mammalian middle ear: Springer Science & Business Media; 2013.
Mallo M. Formation of the outer and middle ear, molecular mechanisms. Curr Top Dev Biol 2003; 57: 85-113. https://doi.org/10.1016/S0070-2153(03)57003-X
Mallo M. Formation of the middle ear: recent progress on the developmental and molecular mechanisms. Dev Biol 2001; 231(2): 410-9. https://doi.org/10.1006/dbio.2001.0154
Fekete DM. Development of the vertebrate ear: insights from knockouts and mutants. Trends Neuroscience 1999; 22(6): 263-9.
Kuratani S, Satokata I, Blum M, Komatsu Y, Haraguchi R, Nakamura S, et al. Middle ear defects associated with the double knock out mutation of murine goosecoid and Msx1 genes. Cell Mol Biol (Noisy-le-grand) 1999; 45(5): 589-99.
Khanna SM, Tonndorf J. Middle ear power transfer. Arch Klin Exp Ohren Nasen Kehlkopfheilkd 1969; 193(1): 78-88. https://doi.org/10.1007/BF00417239
Huang GT, Rosowski JJ, Flandermeyer DT, Lynch TJ, 3rd, Peake WT. The middle ear of a lion: comparison of structure and function to domestic cat. The Journal of the Acoustical Society of America 1997; 101(3): 1532-49. https://doi.org/10.1121/1.418107
Hildmann H, Sudhoff H. Middle ear surgery: . Springer Science & Business Media 2006: 19-23.
Sisson S, Grossman JD. The anatomy of the domestic animals. Jenson Books Inc 1947; Volume 1 5th Edition.
Grossman JD, Getty R. Sisson and Grossman's the Anatomy of the Domestic Animals: Saunders; 1975.
Erdogan S, Kilinc M. Gross anatomy and arterial vascularization of the tympanic cavity and osseous labyrinth in mid-gestational bovine fetuses. Anat Rec 2010; 293(12): 2083-93. https://doi.org/10.1002/ar.21269
Padmini M, Rao BJIJAR. Morphological variations in human fetal ear ossicles-a study. International Journal of Anatomy and Research 2013; 1(2): 40-2.
Simaei N, Soltanalinejad F, Najafi G, Jalali AS, editors. Anatomical and morphometrical study of middle ear ossicles in 2 to 3-month-old Makouei sheep fetuses. Veterinary Research Forum; 2017: Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
Sodhi S, Sing Z, Lal J. Morphometric dimensions of human ear ossicles of males. National Journal of Medical Research 2017; 7: 47-51.
Kurtul I, Cevik A, Bozkurt EU, Dursun N. A detailed subgross morphometric study on the auditory ossicles of the New Zealand rabbit. Anat Histol Embryol 2003; 32(4): 249-52. https://doi.org/10.1046/j.1439-0264.2003.00483.x
Oschman Z, Meiring JH. A morphometric and comparative study of the malleus. Acta Anat 1991; 142(1): 60-1. https://doi.org/10.1159/000147161
Masuda Y, Honjo H, Naito M, Ogura Y. Normal development of the middle ear in the mouse: a light microscopic study of serial sections. Acta Med Okayama 1986; 40(4): 201-7.
Schönfelder J, Zschäckel MJGmJ. Postnatal development of the sound-transporting apparatus in the middle ear of rabbits. Gegenbaurs Morphol Jahrb 1985; 131(1): 31-41.
Unur E, Ülger H. Morphometrical and morphological variations of middle ear ossicles in the newborn. Erciyes Medical Journal 2002; 24: 57-63.
Sarrat R, Garcia Guzman A, Torres A. Morphological variations of human ossicula tympani. Acta Anat 1988; 131(2): 146-9. https://doi.org/10.1159/000146503
Noussios G, Chouridis P, Kostretzis L, Natsis K. Morphological and Morphometrical Study of the Human Ossicular Chain: A Review of the Literature and a Meta-Analysis of Experience Over 50 Years. J Clin Med Res 2016; 8(2): 76-83. https://doi.org/10.14740/jocmr2369w
Mogra K, Gupta S, Chauhan S, Panwar LJIJoH, Research B. Morphological and morphometrical variations of malleus in human cadavers. J Clin Med Res 2014; 2: 186-92. https://doi.org/10.5455/2320-6012.ijrms20140562
Cherukupally SR, Merchant SN, Rosowski JJ. Correlations between pathologic changes in the stapes and conductive hearing loss in otosclerosis. Ann Otol Rhinol Laryngol 1998; 107(4): 319-26. https://doi.org/10.1177/000348949810700410
SanMartin J, Rauch SD, Moscicki RA. Bovine temporal bones as a source of inner ear antigen. Ann Otol Rhinol Laryngol 1992; 101(8): 688-90. https://doi.org/10.1177/000348949210100812
