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Morphological features of lower respiratory tract of nine-banded armadillo (Dasypus novemcinctus, Linnaeus, 1758).

Authors
  • Araújo, João Victor Silva1
  • de Barros, Gabriel Martins1
  • Cavalcante, Maria Michele Araújo de Sous...1
  • Silva, Andrezza Braga Soares da1
  • Monção, Élida da Costa1
  • Mendonça, Tarsia Giabardo Silva1
  • Mendes Júnior, Aírton Conde1
  • 1 Department of Morphology, Health Sciences Center, Federal University of Piaui, Teresina, Brazil. , (Brazil)
Type
Published Article
Journal
Anatomia Histologia Embryologia
Publisher
Wiley (Blackwell Publishing)
Publication Date
Mar 01, 2021
Volume
50
Issue
2
Pages
234–239
Identifiers
DOI: 10.1111/ahe.12620
PMID: 32997356
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The nine-banded armadillo (Dasypus novemcinctus) is a mammal of the Xenarthra Superorder, which inhabits Central, South and North America. Few morphological descriptions are observed in this species, including the respiratory tract; therefore, the objective of this study was to describe morphologically the lower respiratory tract of the nine-banded armadillo. Five animals were dissected, and the macroscopic and microscopic aspects were analysed. In the anatomical analysis, the perfusion technique was performed with vinyl acetate and the fragments of tissue from respiratory organs (trachea, bronchi, bronchioles and pulmonary lobes) were stained with haematoxylin-eosin for visualization under optical microscopy. Containing about 30 cartilage rings, the trachea is lined internally with ciliated pseudostratified epithelial tissue. The lungs are subdivided into lobes by deep interlobar fissures, with two lobes in the right lung and three lobes in the left lung. Microscopically, the primary, secondary and tertiary bronchi have non-ciliated pseudostratified epithelium with goblet cells. It was found that macro- and microscopically the respiratory tract of this species is similar to existing xenarthras and other excavator animals. These data provide subsidies for the clinic and preservation of this species. © 2020 Wiley-VCH GmbH.

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