جستجوی مقالات مرتبط با کلیدواژه "tympanic membrane" در نشریات گروه "زیست شناسی"

Backgroung & Buffalo has a special role in the economy of more than forty countries and theirs numbers and distributions is growing every year. The tympanic membrane is a thin membrane that separates the outer ear from the middle ear and this ossicle important in physiology and pathology. There is no anatomical and morphometrical research performed on this organ in buffalo. For this study 8 heads of  male and female buffalo were purchased from slaughterhouse and their tympanic membrane were studied anatomical and morphologically.  The anatomical results showed tympanic membrane was elliptical and white to pink white. Pars flaccida of tympanic membrane was small and triangle and in some cases was rectangle, in addition pars tensa of tympanic membrane was large and oval shape. The average measurement  of parameters showed the size of tympanic membrane in female is larger than male, and right side also was larger than left side. Statistical analysis Tukey showed these differences were not significant (p≤0/05).  The results of this research can be used as the basic knowledge in clinical research for buffalo.

Buffalo is an economic animal in Livestock areas. Buffalo has two types: swamp buffalo and river buffalo. The tympanic membrane or ear drum  is a thin membrane that separates the outer ear from the middle ear. There is no histological and histochemical research performed on this organ in buffalo.

For this study 8 heads of  male and female buffalo were purchased from slaughterhouse and their tympanic membrane were studied histomorphometry , histological  and histochemically with H&E, Verhoff, PAS and MTC staining.

The result showed Tympanic membrane had three layers of Epithelial layer, connective tissue and mucosal layer. In Epithelial layer Epithelium was stratified squamous and in  mucosal layer epithelium  was simple squamous. Connective tissue wasvery thick and its collagen fibers types was arranged in radial and circular manner. The most types of connective cells were fibroblast. Collagen and elastic fibers were in both parts of tympanic membrane, but pars flaccida of tympanic membrane had more elastic fibers and in contrast it’s pars tensa of tympanic membrane had more collagen fibers. The highest density of collagen fiber observed in left tympanic membrane of female buffalo and lowest density of collagen fiber was in left tympanic membrane of male buffalo.

Overalls result showed tympanic membrane in buffalo had Similarities and differences with  ruminants and other animals.