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The superficial musculoaponeurotic system (SMAS) is a layer of the face beneath the subcutaneous fat. The SMAS is represented in the scalp by the galea aponeurotica, which then splits to ensheathe the frontalis, occipitalis, procerus, and some of the periauricular muscles.

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Overview of Upper Facial and Midfacial Regions

  • 章节

  • 发表日期：

    2025年

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  • Nobutaka Yoshioka,
  • Albert L. Rhoton, Jr.,
  • Juan C. Fernandez-Miranda

摘要

The superficial musculoaponeurotic system (SMAS) is a layer of the face beneath the subcutaneous fat. The SMAS is represented in the scalp by the galea aponeurotica, which then splits to ensheathe the frontalis, occipitalis, procerus, and some of the periauricular muscles.