comportamento dos nervos glossofaríngeo e vago, na região retrofaríngea de ovinos: origem aparente no crânio, trajeto, ramificação e distribuição behavior of the glossopharyngeal and vagus nerves in the retropharyngeal region of sheep: apparent origin in cranium, course, branching and distribution
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ID: 179025
2007
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Abstract
Em 60 hemicabeças de ovinos da raça Santa Inês foram estudadas a origem aparente no crânio, trajeto, ramificação e distribuição do nervo glossofaríngeo (Gf) e do nervo vago (Vg), na região retrofaríngea (Rr). Mediante fixação e dissecação das peças, foi observado que os nervos glossofaríngeos e vagos originam-se no forame jugular em 100% dos casos. Os nervos glossofaríngeos direito e esquerdo (Gfde) são localizados, com maior freqüência (86,6%), medialmente à bula timpânica, passam caudalmente ao osso estiloióide, contornam a margem caudal do músculo estilofaríngeo caudal, tonsilar, da mucosa faríngea e lingual. Estes ramos distribuemse, respectivamente, no seio carotídeo, musculatura faríngea, palato mole, músculo estilofaríngeo caudal, tonsila palatina, mucosa faríngea e terço caudal da língua (100%). Os nervos vagos direito e esquerdo (Vgde) correm caudalmente em associação com os nervos acessórios (Ac) até o atlas (70%), após o que passam medialmente à artéria occipital, dorsalmente à carótida comum e ao tronco simpático, na região cervical (80%). Os ramos dos nervos vagos são os faríngeos (86,66%) e os laríngeos craniais (100%).
In 60 hemiheads of sheep of the Santa Ines breed the apparent origin in the skull of itinerary, ramification and distribution of the glossopharingeal nerve (Gf) and the vagus nerve (Vg) in the retropharyngeal region (Rr) were studied. By fixation and dissection of the specimens it was seen that the glossopharyngeal nerve and the vagus nerve arise from the jugular foramen in 100% of the cases. The right and the left glossopharingeal nerve (Glde) are frequently (86.6%) located more medially to the tympanic bulla, pass caudally to the stylohyoid bone, bypass the margin of the caudal stylopharyngeal muscle, the tonsilla, of the pharyngeal and the lingual mucous membrane. These branches are distributed, respectively, in the carotid sinus, pharyngeal musculature, soft palate, stylopharyngeal muscle, palatine tonsil, pharyngeal mucosa and the caudal third of the tongue (100%). The right and the left vagus nerve run caudally in association with the accessory nerves (Ac) up to the atlas (70%) and go then medially to the occipital artery, dorsally to the common carotid and the sympathetic trunk in the cervical region (80%). The vague nerves have pharyngeal (86.6%) and cranial laryngeal (100%) branches.
In 60 hemiheads of sheep of the Santa Ines breed the apparent origin in the skull of itinerary, ramification and distribution of the glossopharingeal nerve (Gf) and the vagus nerve (Vg) in the retropharyngeal region (Rr) were studied. By fixation and dissection of the specimens it was seen that the glossopharyngeal nerve and the vagus nerve arise from the jugular foramen in 100% of the cases. The right and the left glossopharingeal nerve (Glde) are frequently (86.6%) located more medially to the tympanic bulla, pass caudally to the stylohyoid bone, bypass the margin of the caudal stylopharyngeal muscle, the tonsilla, of the pharyngeal and the lingual mucous membrane. These branches are distributed, respectively, in the carotid sinus, pharyngeal musculature, soft palate, stylopharyngeal muscle, palatine tonsil, pharyngeal mucosa and the caudal third of the tongue (100%). The right and the left vagus nerve run caudally in association with the accessory nerves (Ac) up to the atlas (70%) and go then medially to the occipital artery, dorsally to the common carotid and the sympathetic trunk in the cervical region (80%). The vague nerves have pharyngeal (86.6%) and cranial laryngeal (100%) branches.
| Reference Key |
farias2007pesquisacomportamento
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| Authors | ;Márcia Maria M.D. Farias;Cristiane V. Wenceslau;Juliana Passos;Dulcinéa G. Teixeira;Karla P.C. Araújo;Carlos E. Ambrósio;Daniele S. Martins;Maria Angélica Miglino;Irvênia L.S. Prada |
| Journal | AIP Conference Proceedings |
| Year | 2007 |
| DOI |
10.1590/S0100-736X2007000300006
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| URL | |
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