What is the role and structure of the epidermis (表皮层) in the skin?

Answered on : 2024-01-24

1. The **epidermis (表皮层)** is the outermost layer of the skin, with an average thickness of 0.2 millimeters[15].

2. It consists of five layers: the **stratum corneum (角质层)**, **stratum lucidum (透明层)**, **stratum granulosum (颗粒层)**, **stratum spinosum (有棘层)**, and **stratum basale (基底层)**[15][21].

3. The epidermis lacks blood vessels but plays a crucial role in protecting the skin[7].

4. Each layer has specific functions, contributing to the overall health and appearance of the skin[21].

5. Understanding the epidermal structure is essential for skincare, as it influences absorption, elasticity, and barrier functions[9][13].

**References:**

[7]: MM Beauty Studio | Facebook

[9]: 知乎 - 表皮层结构

[13]: 零基础认识皮肤结构看完的人皮肤都变好了 | 手机新浪网

[15]: 满地橙Mandy Chan - 表皮层EPIDERMIS | Facebook

[21]: 认识我们的肌肤——表皮层 | 知乎

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