Surg Radiol Anat (2017) 39:885–895 DOI 10.1007/s00276-017-1818-y ORIGINAL ARTICLE 1 2 3 4 5 Zhe Wu Jin · Kwang Ho Cho · Hiroshi Abe · Yukio Katori · Gen Murakami · Jose Francisco Rodríguez‑Vázquez Received: 27 September 2016 / Accepted: 9 January 2017 / Published online: 14 February 2017 © Springer-Verlag France 2017 Abstract vagus nerve branch and the FN, was located outside of the Purpose The aim of this study was to re-examine the temporal bone even at 37 weeks. The second knee of the structures that determine course of the facial nerve (FN) in FN was not evident, in contrast to the acute anterior turn the fetal ear region. below the chorda tympanic nerve origin. In all examined Materials and methods We used sagittal or horizon- fetuses, the apex of the cochlea did not face the middle cra- tal sections of 28 human fetuses at 7–8, 12–16, and nial fossa, but the tympanic cavity. 25–37 weeks. Conclusion Topographical relation among the FN and Results The FN and the chorda tympani nerve ran almost related nerves in the ear region seemed not to be estab- parallel until 7 weeks. The greater petrosal nerve (GPN) lished in the fetal age but after birth depending on growth ran vertical
Surgical and Radiologic Anatomy – Springer Journals
Published: Feb 14, 2017
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