A comparative morphologic and morphometric study about geniculate ganglion development in man and in rat
| Autor: | Arantza Ibargutxi, Francisco Santaolalla, J. M. Sánchez-fernández, Agustin Martinez-Ibargüen, Ana Sanchez-del-Rey |
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| Rok vydání: | 2016 |
| Předmět: |
Pathology
medicine.medical_specialty Biometry Neuronal migration Neural crest General Medicine Anatomy Biology Geniculate Ganglion Rats Fetal Development 03 medical and health sciences 0302 clinical medicine Otorhinolaryngology 030220 oncology & carcinogenesis medicine Foramen Animals Humans Geniculate ganglion 030223 otorhinolaryngology |
| Zdroj: | Acta Oto-Laryngologica. 137:375-383 |
| ISSN: | 1651-2251 0001-6489 |
| DOI: | 10.1080/00016489.2016.1257867 |
| Popis: | Human-rat geniculate ganglion (GG) have multiple origins: (1) An initial proximity (20 μm) to the endocranial foramen of the IAM, suggests neural crest induction; and (2) The influence of epibranchial placodes: the tensor tympani muscle (TTM) and the otic apical coil.This study was undertaken to determine the comparative development of human-rat GG.A light microscopic study of the GG in human material obtained from spontaneous abortions at 9, 13, 14, 17, 18, and 30 weeks, and one neonate was done. This study examined Webster rat embryos and a post-natal series. Specimens were fixed in Bouin fluid, embedded in paraffin, cut, and stained with HE. The histomorphometric data were obtained with image analysis software.The human fetus of 9 weeks presents two neuronal groups in the VII nerve: one near (20 μm) the IAM endocranial foramen, foraminal, and the other, tympanic. Neonate GG is located between the TTM and the cochlear apex (inwards). In the 16 day old rat embryo GG is placed within a canal containing the stapedial artery. In the adult rat the GG and the stapedial artery are placed within the IAM. |
| Databáze: | OpenAIRE |
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