open access

Vol 74, No 2 (2015)
ORIGINAL ARTICLES
Published online: 2015-05-28
Submitted: 2015-03-06
Accepted: 2015-04-17
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Early development of the facial nerve in human embryos at stages 13–15

M. Weglowski, W. Woźniak, A. Piotrowski, M. Bruska, J. Weglowska, J. Sobański, M. Grzymisławska, J. Łupicka
DOI: 10.5603/FM.2015.0039
·
Pubmed: 26050815
·
Folia Morphol 2015;74(2):252-257.

open access

Vol 74, No 2 (2015)
ORIGINAL ARTICLES
Published online: 2015-05-28
Submitted: 2015-03-06
Accepted: 2015-04-17

Abstract

Study was made on 16 human embryos at developmental stages 13–15 (fifth week). The facial nerve was traced on serial sections made in three planes (sagittal, frontal and horizontal) and stained with routine histological methods and impregnated with silver. In embryos at stage 13 the facial ganglion forms a complex structure with the vestibulocochlear ganglion. It is of fusiform shape in contact with epipharyngeal placode and is located anteriorly and ventrally to the vestibulocochlear ganglion. In embryos at stage 14 the facial ganglion separates from the vestibular and cochlear ganglia and the chorda tympani as the first branch appears. During stage 15 the main trunk of the facial nerve elongates and the greater petrosal nerve originates at the level of the facial ganglion and above the origin of the chorda tympani.

Abstract

Study was made on 16 human embryos at developmental stages 13–15 (fifth week). The facial nerve was traced on serial sections made in three planes (sagittal, frontal and horizontal) and stained with routine histological methods and impregnated with silver. In embryos at stage 13 the facial ganglion forms a complex structure with the vestibulocochlear ganglion. It is of fusiform shape in contact with epipharyngeal placode and is located anteriorly and ventrally to the vestibulocochlear ganglion. In embryos at stage 14 the facial ganglion separates from the vestibular and cochlear ganglia and the chorda tympani as the first branch appears. During stage 15 the main trunk of the facial nerve elongates and the greater petrosal nerve originates at the level of the facial ganglion and above the origin of the chorda tympani.

Get Citation

Keywords

human embryonic period, nervous system, facial nerve

About this article
Title

Early development of the facial nerve in human embryos at stages 13–15

Journal

Folia Morphologica

Issue

Vol 74, No 2 (2015)

Pages

252-257

Published online

2015-05-28

DOI

10.5603/FM.2015.0039

Pubmed

26050815

Bibliographic record

Folia Morphol 2015;74(2):252-257.

Keywords

human embryonic period
nervous system
facial nerve

Authors

M. Weglowski
W. Woźniak
A. Piotrowski
M. Bruska
J. Weglowska
J. Sobański
M. Grzymisławska
J. Łupicka

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