MYELINATIONO F NEURONSO F THEG ENICULATEG ANGLIONIN GUINEAP IGS:A N ULTRA$TRUCTURASL TUDY IN THE PERINATALP ERIODA ND ADULTL IFE. | ||||
The Egyptian Journal of Anatomy | ||||
Article 10, Volume 27, Issue 2, July 2004, Page 227-252 PDF (1.73 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejana.2004.5910 | ||||
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Authors | ||||
Sawsan Abd-el Rahman1; Ghada Wassif1; Azza $oliman2; Mohamed El Beger2 | ||||
1Departmentos f Anatomya nd E. N T. Ain Shams University | ||||
2Departmentos f Anatomya nd E. N T. Ain Shams Universi | ||||
Abstract | ||||
The acousticofaciagla nglioni s mainlyd erivedf rom the neuralc rest,l t consistso f a vestibulocochleapra rtw hicha t firstf usedw itht he gangliono f the facial nerve but later,t he two separate.T he vestibulara nd cochlear gangliae ach becomesa ssociatedw ith the correspondindgi visiono f the eighthn erve.C ellso f the vestibulaar nd cochlearg angliar emainb ipolar throughoulti fea nd theirn euronsa re unusuailn that manyo f theirs omata becomee nvelopedin thin myelins heaths( Williamse t al. 1995).M osto f the vestibulagr anglionn euronsa re surfoundedb y thin myelins heathi n humans( Ona and Kanzaki,1 99{),i n adults quirreml onkey( Fermina nd lgrashi,1 982),i n cat( $pasova,1 982),i n rabbitsa nd in bats( Ona,1 993). Ultrastructurafel atureso f the human spiral (cochlear)g anglionr evealedt hat large myelinatedn euronsw ere few. However,t he majorityo f cellsw ere myelinatedin guineap igs( Thomsen,1 966;A bdel Rahmane t al.,1 998)a ndi n cats( $poendlin1, 972). | ||||
Keywords | ||||
missed | ||||
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