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Microscopic anatomy of the lower respiratory system of the African giant pouched rat (Cricetomys gambianus, Waterhouse 1840) / Anatomía microscópica del sistema respiratorio inferior de la rata gigante Africana (Cricetomys gambianus, Waterhouse 1840)
Ibe, C S; Onyeanusi, B I; Salami, S O; Nzalak, J O.
  • Ibe, C S; Ahmadu Bello University. Department of Veterinary Anatomy. Zaria. NG
  • Onyeanusi, B I; Ahmadu Bello University. Department of Veterinary Anatomy. Zaria. NG
  • Salami, S O; Ahmadu Bello University. Department of Veterinary Anatomy. Zaria. NG
  • Nzalak, J O; Ahmadu Bello University. Department of Veterinary Anatomy. Zaria. NG
Int. j. morphol ; 29(1): 27-33, Mar. 2011. ilus
Article in English | LILACS | ID: lil-591945
ABSTRACT
A qualitative and quantitative study, by light microscopy, was undertaken on the lower respiratory system of the African Giant pouched rat. Specifically, the trachea, bronchi and lungs were stained with Haematoxylin and eosin, Alcian blue at a pH of 2.5 and Periodic Acid-Schiff stains. Three cell types were identified in saggital sections of the trachea the ciliated cells, basal cells and mucous cells. Fibers of the trachealis muscles in the laminar propria separated the underlying cartilages from the basal cells. Mucous cells were visible only in the membranous portion of the trachea and they were predominant in the rostral and caudal portion of the trachea. Lobar bronchi consisted of cuboidal epithelium and a layer of one or two smooth muscle cells and opened into segmental bronchi and respiratory bronchiole. Some tracheal cartilaginous rims stained blue with AB while most glandular cells stained red with PAS. The diameter of respiratory bronchiole, alveoli duct and alveoli were 24.93 µm (+/- 1.27), 21.14 um (+/- 0.66) and 12.95 um (+/- 0.21), respectively. These and other findings were compared with similar report in other rodents.
RESUMEN
Se realizó un estudio cualitativo y cuantitativo, mediante microscopía de luz, en el sistema respiratorio inferior de la rata gigante Africana. La tráquea, los bronquios y los pulmones fueron teñidos con hematoxilina y eosina, azul Alcián a pH de 2,5 y ácido periódico de Schiff. Tres tipos de células fueron identificadas en las secciones sagitales de la tráquea células ciliadas, basales y mucosas. Las fibras del músculo traqueal en la propia laminar separados los cartílagos subyacente de las células basales. las células mucosas son visibles sólo en la porción membranosa de la tráquea y predominan en la parte rostral de la porción caudal de la tráquea. Los bronquios lobares consistían en epitelio cúbico y una capa de una o dos células de músculo liso y abierto en los bronquios y bronquiolos segmentarios respiratorias. Algunos bordes azules cartilaginoso traqueal manchada con AB, mientras que la mayoría de las células glandulares teñido de rojo con PAS. El diámetro de los bronquiolos respiratorios, conductos alveolares y los alvéolos fueron 24,93 m (+/- 1,27), 21,14 m (+/- 0,66) y 12,95 m (+/- 0,21), respectivamente. Estos y otros resultados se compararon con el informe similar en otros roedores.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Respiratory Mucosa Type of study: Diagnostic study / Evaluation studies / Prognostic study / Qualitative research Limits: Animals Country/Region as subject: Africa Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2011 Type: Article Affiliation country: Nigeria Institution/Affiliation country: Ahmadu Bello University/NG

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Full text: Available Index: LILACS (Americas) Main subject: Respiratory Mucosa Type of study: Diagnostic study / Evaluation studies / Prognostic study / Qualitative research Limits: Animals Country/Region as subject: Africa Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2011 Type: Article Affiliation country: Nigeria Institution/Affiliation country: Ahmadu Bello University/NG