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Abstract:

The structure of the larynx of the toad Rhinella arenarum was exhaustively studied. The laryngeal skeleton consists of three bilaterally symmetrical cartilages: The cricoid and two arytenoids. Internally, each half-larynx has an anterior and a posterior chamber. The first chamber is delimited by the epithelium covering the arytenoid cartilage and the anterior membrane. The latter consists of fibro-elastic tissue and contains blood capillaries that, judging by their location and distribution, might serve to maintain vocal cord turgidity. At the level of the cricoid cartilage, two structures are reported here for the first time: the posterodorsal and the anteroventral processes. Both processes are associated with the insertion of the posterior membrane. A cartilaginous rod is located at the free margin of the posterior membrane. This rod appears to support the membrane when the air flows. The distal portion of the larynx communicates with the proximal region of the lung. The epithelium of the laryngeal mucosa contains ciliated cells, goblet cells, secretory cells with short microvilli and neuroendocrine cells immunopositive to PGP 9.5. The results obtained in this study provide new information about the internal organization of the larynx in anurans, which could serve as additional morphological characters for phylogenetic relationships. © 2008 The Royal Swedish Academy of Sciences.

Registro:

Documento: Artículo
Título:Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
Autor:Hermida, G.N.; Farías, A.
Filiación:Laboratorio de Histologia Animal, Departamento de Biodiversidad, Universidad de Buenos Aires, Av. Int. Güiraldes 2620, Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:Histology; Larynx; Morphology; Rhinella arenarum; airflow; ciliate; eukaryote; functional morphology; histology; immunoassay; muscle; neurology; phylogenetics; secretion; skeleton; toad; Anura; Bufonidae
Año:2009
Volumen:90
Número:4
Página de inicio:326
Página de fin:338
DOI: http://dx.doi.org/10.1111/j.1463-6395.2008.00357.x
Título revista:Acta Zoologica
Título revista abreviado:Acta Zool.
ISSN:00017272
CODEN:AZOSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017272_v90_n4_p326_Hermida

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Citas:

---------- APA ----------
Hermida, G.N. & Farías, A. (2009) . Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae). Acta Zoologica, 90(4), 326-338.
http://dx.doi.org/10.1111/j.1463-6395.2008.00357.x
---------- CHICAGO ----------
Hermida, G.N., Farías, A. "Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)" . Acta Zoologica 90, no. 4 (2009) : 326-338.
http://dx.doi.org/10.1111/j.1463-6395.2008.00357.x
---------- MLA ----------
Hermida, G.N., Farías, A. "Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)" . Acta Zoologica, vol. 90, no. 4, 2009, pp. 326-338.
http://dx.doi.org/10.1111/j.1463-6395.2008.00357.x
---------- VANCOUVER ----------
Hermida, G.N., Farías, A. Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae). Acta Zool. 2009;90(4):326-338.
http://dx.doi.org/10.1111/j.1463-6395.2008.00357.x