The superficial cervicofacial musculoaponeurotic system (SMAS) is a complex network formed by mimic muscles and conjunctive tissue of the superficial fascia of the face.This study aimed to introduce new anatomofunctional data on the importance of the trans-SMAS distribution pattern of the skin microperfusion of the face and to underline the role of SMAS in maintaining the homeostasis of the vascular network that crosses it. Considering the fibrous and muscular matrix of the SMAS, using COLIII and MyoH2 antibodies, together with endothelial immunohistochemistry(IHC)intercellular adhesion molecule 2 marker, we determined the correlation of these structures and their interaction. This study included 33donors of SMAS tissues, which have been stained withregular hematoxylin and eosin (HE), and three different IHC markers have been used (collagen III, muscular tissue, and blood vessels). The samples were collected from parotid, masseteric, jugal, and zygomatic regions. Magnetic resonance angiography was used to identify the main vascular sources of the midlateral regions of the face of another 47 patients. Significant differences in topographic arrangement, density, and relations of the microsopic vasculature were observed between each of the four regions. Major differences were identified between the role of SMAS in each of these regions, from the parotid capsule to masseteric fascia, transition mobile part, and attaching manners in the zygomatic subunit. Blood vessel topography must be related with the surrounding conjunctive and muscular tissue, especially regarding facial SMAS. Intrinsic relations between these three components of the SMAS and nervous fibers can provide us important hints on the functionality of the whole system.

中文翻译：

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面部中部区域浅表颈面肌肉腱膜系统血管的形态功能和组织学模式

浅表颈面肌肉腱膜系统 (SMAS) 是由面部浅筋膜的模拟肌肉和结膜组织形成的复杂网络。本研究旨在介绍新的解剖功能数据，以说明皮肤微灌注的跨 SMAS 分布模式的重要性。面部并强调 SMAS 在维持穿过其的血管网络稳态中的作用。考虑到 SMAS 的纤维和肌肉基质，使用 COLIII 和 MyoH2 抗体以及内皮免疫组织化学 (IHC) 细胞间粘附分子 2 标记物，我们确定了这些结构的相关性及其相互作用。这项研究包括 33 名 SMAS 组织供体，这些组织已用常规苏木精和伊红 (HE) 染色，并使用了三种不同的 IHC 标记物（III 型胶原蛋白、肌肉组织和血管）。样本采集自腮腺、咬肌、颧骨和颧骨区域。另外47名患者采用磁共振血管造影来识别面部中外侧区域的主要血管来源。在四个区域之间观察到显微脉管系统的地形排列、密度和关系的显着差异。从腮腺囊到咬肌筋膜、过渡活动部分以及颧亚单位的附着方式，SMAS 在每个区域中的作用之间存在主要差异。血管地形必须与周围的结缔组织和肌肉组织相关，尤其是面部 SMAS。 SMAS 的这三个组成部分和神经纤维之间的内在关系可以为我们提供有关整个系统功能的重要提示。