Morphology and computed tomography of the larynx in the white-eared opossum (Didelphis albiventris).
diagnostic imaging
histology
larynx
marsupial
opossum
Journal
Anatomia, histologia, embryologia
ISSN: 1439-0264
Titre abrégé: Anat Histol Embryol
Pays: Germany
ID NLM: 7704218
Informations de publication
Date de publication:
18 Oct 2023
18 Oct 2023
Historique:
revised:
18
09
2023
received:
20
08
2023
accepted:
06
10
2023
medline:
18
10
2023
pubmed:
18
10
2023
entrez:
18
10
2023
Statut:
aheadofprint
Résumé
The white-eared opossum (Didelphis albiventris) is a Neotropical marsupial that occurs in the Brazilian territory. The larynx is an important organ of vocalization in mammals, although, other laryngeal functions are more fundamental for survival of mammals than phonation. The anatomical knowledge of respiratory structures is pivotal for a better understanding of the species. Thus, this study aimed to examine the larynx of the white-eared opossum by gross anatomy, computed tomography and histological description. For this, 10 adult (six females and four males) white-eared opossums (D. albiventris) were used. The white-eared opossum larynx was formed by epiglottis, thyroid, cricoids and arytenoid cartilages and a corniculate process. There is a similarity between the larynx of this marsupial and those reported in other wild mammals, regarding the number of cartilages and their location. Histologically, the epiglottis consisted of elastic cartilage and thyroid, cricoid and arytenoid cartilages were composed of hyaline cartilage. The epiglottis protruded rostrally into the nasal part of the pharynx, above the soft palate, and this is probably a marsupial characteristic as the fact that the thyroid and cricoid cartilages were ventrally fused. The hyoid apparatus was similar to that of other animals, with the same bony constitution, but with a greatly reduced stylohyoid bone. Histologically, the larynx was similar to those of other species such as koala, armadillo, crab-eating foxes and giant anteaters. The knowledge of the larynx morphology is important for the anatomical features of the species and clinical and surgical procedures, such as endotracheal intubation.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2023 Wiley-VCH GmbH. Published by John Wiley & Sons Ltd.
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