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Comparative anatomical studies on the cranial nerves of the fully formed embryos of the Nile tilapia Oreochromis niloticus (Ostiechthyes-Cichlidae). I. Nervus glossopharyngeus.
Dakrory, A I; Abdel-Kader, T G; Hassan, M M; Al-Malky, G J.
Afiliação
  • Dakrory AI; Cairo University, Faculty of Science, Department of Zoology, Cairo, Egypt.
  • Abdel-Kader TG; Taif University, College of Sciences, Department of Biology, Taif, Saudi Arabia.
  • Hassan MM; Helwan University, Department of Zoology & Entomology, Faculty of Science, Cairo, Egypt.
  • Al-Malky GJ; Taif University, College of Sciences, Department of Biology, Taif, Saudi Arabia.
Braz J Biol ; 82: e245509, 2021.
Article em En | MEDLINE | ID: mdl-33978085
The organization of the roots, ganglia and the peripheral distribution of the cranial nerves of the fully formed embryos of Oreochromis niloticus are examined in the transverse serial sections. These nerves carry fibers, which were also analyzed. The results of this study demonstrated that the glossopharyngeal nerve originates by means of only one root, which leaves the cranium through the glossopharyngeal foramen. This nerve gives fibers (visceromotor) to the first internal and external levator arcus branchialis muscles. There is a single epibranchial (petrosal) ganglion located extracranially. Nervus glossopharyngeus has three rami; pharyngeus, pretramticus and posttrematicus. The ramus pharyngeus carries only viscerosensory fibers; general for the pharyngeal epithelium and special ones for the pseudobranch. General viscerosensory fibers are also carried by rami pretrematicus and posttrematicus for the pharyngeal epithelial lining. The special sensory fibers are carried by the ramus pretrematicus for the taste buds and by ramus posttrematicus for the gill filaments. The ramus pretrematicus also carries visceromotor fibers for the first adductor arcus branchialis and to the first obliquus ventralis muscles.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Papilas Gustativas / Ciclídeos Limite: Animals Idioma: En Revista: Braz J Biol Assunto da revista: BIOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Egito País de publicação: Brasil

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Papilas Gustativas / Ciclídeos Limite: Animals Idioma: En Revista: Braz J Biol Assunto da revista: BIOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Egito País de publicação: Brasil