Morphology of urinary system in six‐banded armadillo (Euphractus sexcinctus, Linnaeus, 1758)
2022
Fonseca, Clarisse Maria Barbosa | Mendonça, Tarsia Giabardo Silva Mendonça | da Silva, Andrezza Braga Soares | de Sousa Cavalcante, Maria Michele Araujo | Araújo, João Victor Silva | Júnior, Aírton Mendes Conde
Euphractus sexcinctus is a wild mammal native to the Americas; they have great diversity and are not in danger of extinction like other armadillo species. Despite the diversity, the morphology of several biological systems of this species has not been fully described. This study details the gross and microscopic anatomy of the urinary system in Euphractus sexcinctus, a six‐banded armadillo, compared with other mammalian study models. Six animals were dissected in the study. In the anatomical analysis, the kidneys, ureters, urinary bladder and urethra were dissected and photographed; then, fragments were submitted to histological routine for staining with haematoxylin‐eosin, toluidine blue and Masson's trichrome for visualization under light microscopy. The six‐banded armadillo ureter is histologically composed of four concentric layers. The urinary bladder is presented with three tissue layers. The pattern of constitution and distribution of urinary system structures was compatible with that of most domestic like Canis familiaris and wild animals like Bradypus torquatus, with adaptations for the arid and semi‐arid habitat. The description of the morphology of Euphractus sexcinctus presents great relevance both for its conservation and for its use as a model for clinical research.
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