SciELO - Scientific Electronic Library Online

vol.77 issue3Effect of green propolis on oral epithelial dysplasia in ratsIncidence of tinnitus in mp3 player users author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Brazilian Journal of Otorhinolaryngology

Print version ISSN 1808-8694


SOARES, Hormy Biavatti  and  LAVINSKY, Luiz. Histology of sheep temporal bone. Braz. j. otorhinolaryngol. (Impr.) [online]. 2011, vol.77, n.3, pp.285-292. ISSN 1808-8694.

Previous studies suggest that there is an excellent correlation between the morphology and dimensions of ear structures in sheep and human beings. AIM: To analyze and describe the histology of structures inside the temporal bone in sheep. MATERIAL AND METHODS: A total of 307 slides obtained from vertical and horizontal sections of the temporal bone of eight sheep were analyzed. Structures were classified as similar or not similar to human structures, based on cellularity and histological architecture parameters. STUDY DESIGN: Experimental. RESULTS: The study revealed similarities between sheep and humans in terms of type of epithelium, bone component, spaces in the auditory meatus, in addition to a marked histological resemblance of cellularity and that of the structures surrounding the ear. The main differences observed were the presence of an anatomic bulla, the absence of aeration in the mastoid and the inferior opening of the hypotympanum into the bulla in sheep. CONCLUSION: Based on these observations, it is possible to conclude that sheep represent an adequate option for training and research in otologic surgery.

Keywords : histology; ear; temporal bone; sheep.

        · abstract in Portuguese     · text in English     · English ( pdf ) | Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License