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New anatomical insight of the levator labii superioris alaeque nasi and the transverse part of the nasalis

Authors
 M. S. Hur  ;  K. S. Hu  ;  J. T. Park  ;  K. H. Youn  ;  H. J. Kim 
Citation
 SURGICAL AND RADIOLOGIC ANATOMY, Vol.32(8) : 753-756, 2010 
Journal Title
 SURGICAL AND RADIOLOGIC ANATOMY 
ISSN
 0930-1038 
Issue Date
2010
MeSH
Aged ; Aged, 80 and over ; Facial Muscles/anatomy & histology* ; Female ; Humans ; Male ; Middle Aged ; Nose/anatomy & histology
Keywords
Levator labii superioris alaeque nasi ; Transverse part of nasalis ; Levator labii superioris ; Alar facial crease
Abstract
PURPOSE: The aim of this study was to clarify the morphology and topography of the deep layer of levator labii superioris alaeque nasi muscle (LLSAN) and the transverse part of the nasalis. Anatomical variations in the topographic relationships were also described to understand the function of the LLSAN and the transverse part of the nasalis. METHODS: Anatomical dissections were performed on 40 specimens of embalmed Korean adult cadavers. RESULTS: The LLSAN was divided into two layers, which were superficial and deep in the levator labii superioris muscle (LLS), respectively. The superficial layer of LLSAN descended on the LLS, and the deep layer was located deep in the LLS. The deep layer of LLSAN originated from the superficial layer of LLSAN and the frontal process of the maxilla. It inserted between the levator anguli oris and the orbicularis oris muscles. This transverse part of the nasalis received some muscle fibers from the superficial layer of LLSAN in 90% (36/40) of specimens. The transverse part of the nasalis originated from the maxilla and ascended, passing posterior to the superficial layer of LLSAN in 65% (26/40) of specimens. However, it originated as two muscle bellies from the maxilla and the upper half of the alar facial crease, respectively, in 35% (14/40) of specimens. CONCLUSIONS: These findings will be crucial data to understand the structure and function of the LLSAN and the transverse part of the nasalis
Full Text
http://link.springer.com/article/10.1007%2Fs00276-010-0679-4
DOI
10.1007/s00276-010-0679-4
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Oral Biology (구강생물학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hee Jin(김희진) ORCID logo https://orcid.org/0000-0002-1139-6261
Hu, Kyung Seok(허경석) ORCID logo https://orcid.org/0000-0002-9048-3805
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/102560
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