Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)

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...

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Autores principales: Hermida, G.N., Farías, A.
Formato: JOUR
Materias:
Histology
Larynx
Morphology
Rhinella arenarum
airflow
ciliate
eukaryote
functional morphology
histology
immunoassay
muscle
neurology
phylogenetics
secretion
skeleton
toad
Anura
Bufonidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00017272_v90_n4_p326_Hermida
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00017272_v90_n4_p326_Hermida2023-10-03T13:51:50Z Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae) Hermida, G.N. Farías, A. Histology Larynx Morphology Rhinella arenarum airflow ciliate eukaryote functional morphology histology immunoassay muscle neurology phylogenetics secretion skeleton toad Anura Bufonidae 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00017272_v90_n4_p326_Hermida
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Histology
Larynx
Morphology
Rhinella arenarum
airflow
ciliate
eukaryote
functional morphology
histology
immunoassay
muscle
neurology
phylogenetics
secretion
skeleton
toad
Anura
Bufonidae
spellingShingle Histology
Larynx
Morphology
Rhinella arenarum
airflow
ciliate
eukaryote
functional morphology
histology
immunoassay
muscle
neurology
phylogenetics
secretion
skeleton
toad
Anura
Bufonidae
Hermida, G.N.
Farías, A.
Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
topic_facet Histology
Larynx
Morphology
Rhinella arenarum
airflow
ciliate
eukaryote
functional morphology
histology
immunoassay
muscle
neurology
phylogenetics
secretion
skeleton
toad
Anura
Bufonidae
description 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.
format JOUR
author Hermida, G.N.
Farías, A.
author_facet Hermida, G.N.
Farías, A.
author_sort Hermida, G.N.
title Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
title_short Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
title_full Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
title_fullStr Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
title_full_unstemmed Morphology and histology of the larynx of the common toad Rhinella arenarum (Hensel, 1867) (Anura, Bufonidae)
title_sort morphology and histology of the larynx of the common toad rhinella arenarum (hensel, 1867) (anura, bufonidae)
url http://hdl.handle.net/20.500.12110/paper_00017272_v90_n4_p326_Hermida
work_keys_str_mv AT hermidagn morphologyandhistologyofthelarynxofthecommontoadrhinellaarenarumhensel1867anurabufonidae
AT fariasa morphologyandhistologyofthelarynxofthecommontoadrhinellaarenarumhensel1867anurabufonidae
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