The extended fibers of the alar part of the nasalis connect to the levator labii superioris, zygomaticus minor, and skin adjacent to the nasal ala.

IF 1.4 4区医学 Q2 Medicine Surgical and Radiologic Anatomy Pub Date : 2024-10-01 Epub Date: 2024-08-13 DOI:10.1007/s00276-024-03456-0

Hyun Jin Park, Mi-Sun Hur

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Abstract

Purpose: This study aimed to elucidate the positions of the extended fibers of the alar part of the nasalis (Na), and their connections to the levator labii superioris (LLS), zygomaticus minor (Zmi), and adjacent skin near the nasal ala.

Methods: The extended fibers of the Na were investigated in 54 specimens obtained from 27 embalmed adult South Korean cadavers.

Results: In 51.9% of the specimens, some fibers of the Na extended over the alar facial crease, intermingling or blending with the LLS or Zmi, and attached to the skin lateral to the nasal ala. The quantity and distribution of these extended fibers varied: some fibers of the Na extended and intermingled or blended with the LLS in 25.9%, while another 25.9% exhibited the Na extending in a distinctive fan shape with longer fibers, and combining with both the LLS and Zmi. However, the Na had no extended fibers that reached the LLS, Zmi, or skin near the nasal ala in 48.1%.

Conclusion: Contraction of the Na and its extended fibers can influence the nasal ala and also the laterally located skin and muscles, directing them inferomedially toward the incisive fossa of the maxilla, which is the origin of the nasalis. These insights offer a deeper understanding of the role and actions of facial muscles in facial expression. They will be instrumental in the comprehension and analysis of nose and mouth movements, and in conducting electromyographic analyses in this region.

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鼻翼部分的延伸纤维与唇上提肌、颧骨小肌和邻近鼻翼的皮肤相连。

目的：本研究旨在阐明鼻骨(Na)鼻翼部分延伸纤维的位置及其与唇上提肌(LLS)、小颧肌(Zmi)和鼻翼附近皮肤的连接：方法：研究了从 27 具经防腐处理的韩国成年尸体中提取的 54 个标本中的 Na 延伸纤维：结果：在 51.9% 的标本中，Na 的一些纤维延伸到了耳面部皱襞上方，与 LLS 或 Zmi 交织或混合，并附着在鼻中隔外侧的皮肤上。这些延伸纤维的数量和分布各不相同：有 25.9% 的 Na 纤维延伸并与 LLS 交织或混合，另有 25.9% 的 Na 纤维呈明显的扇形延伸，纤维较长，并与 LLS 和 Zmi 结合。然而，有 48.1% 的 Na 没有延伸纤维到达 LLS、Zmi 或鼻中隔附近的皮肤：结论：Na 及其延伸纤维的收缩可影响鼻中隔以及位于侧面的皮肤和肌肉，将它们引向上颌骨切迹窝的内侧，而切迹窝正是鼻骨的起源。这些见解使我们对面部肌肉在面部表情中的作用和动作有了更深入的了解。它们将有助于理解和分析鼻子和嘴巴的运动，并对这一区域进行肌电图分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surgical and Radiologic Anatomy Medicine-Pathology and Forensic Medicine

CiteScore

2.40

自引率

14.30%

发文量

期刊介绍： Anatomy is a morphological science which cannot fail to interest the clinician. The practical application of anatomical research to clinical problems necessitates special adaptation and selectivity in choosing from numerous international works. Although there is a tendency to believe that meaningful advances in anatomy are unlikely, constant revision is necessary. Surgical and Radiologic Anatomy, the first international journal of Clinical anatomy has been created in this spirit. Its goal is to serve clinicians, regardless of speciality-physicians, surgeons, radiologists or other specialists-as an indispensable aid with which they can improve their knowledge of anatomy. Each issue includes: Original papers, review articles, articles on the anatomical bases of medical, surgical and radiological techniques, articles of normal radiologic anatomy, brief reviews of anatomical publications of clinical interest. Particular attention is given to high quality illustrations, which are indispensable for a better understanding of anatomical problems. Surgical and Radiologic Anatomy is a journal written by anatomists for clinicians with a special interest in anatomy.