角质层 - 百度百科
角质层（stratum corneum, Latin for 'horny layer'）是表皮最外层的部分，主要由10至20层扁平、没有细胞核的死亡细胞组成。 当这些细胞脱落时，底下位于基底层的细胞会被推上来，形成新的角质层。
Stratum corneum - Wikipedia
The stratum corneum (Latin for 'horned layer') is the outermost layer of the epidermis. Consisting of dead tissue, it protects underlying tissue from infection, dehydration, chemicals and mechanical stress. It is composed of 15–20 layers of flattened cells with no nuclei and cell organelles.
Histology, Stratum Corneum - StatPearls - NCBI Bookshelf
2022年11月14日 · As the outermost layer of the epidermis, the stratum corneum is the first line of defense for the body, serving an essential role as a protective skin barrier against the external environment. The stratum corneum aids in hydration and water retention, which prevents skin cracking, and is made up of corneocytes, which are anucleated ...
角質層 - 维基百科，自由的百科全书
角質層 （stratum corneum）是 表皮 最外層的部分，主要由15至20層沒有 細胞核 的 死亡 細胞 組成。 當這些細胞脫落時，底下面位於 基底層 的細胞會被推上來，形成新的角質層。 以人類的前臂為例，每平方厘米表皮在每小時會有1300個角質層細胞脫落，形成 微塵。 會脫落的角質層外層又稱為 分離層 （stratum dysjunction）。 角質層的細胞內含有 角蛋白 （keratin）。 它有助減少水分 流失，甚至能 吸收 水分，使皮膚保持濕潤。 由於水分子通過手腳心面的汗管逐漸散射到皮膚 …
The Structure and Function of the Stratum Corneum - Verywell …
2022年2月18日 · The stratum corneum is the outermost layer of the epidermis. Sometimes referred to as the horny layer of the skin, the stratum corneum is composed mainly of lipids (fats) and keratin, the protein comprising human hair and nails, as well as structures such as horns, hooves, and claws of animals.
The structure and function of the stratum corneum
2012年10月1日 · The stratum corneum has an elegantly simple two-compartment structural organization at the light microscopic level, with the corneocytes embedded in a lipid matrix, as visualized by frozen sections, swollen in alkaline buffer and stained with a dye (Christophers and Kligman, 1964), or when stained with Nile red, a fluorescent lipid stain ...
Stratum Corneum - an overview | ScienceDirect Topics
The stratum corneum is the outermost superficial epidermal layer that serves as the first line of defense between the body and the environment, and the lower part of this layer is crucial in preventing the penetration of irritants and allergens (Cork et al., 2006).
5.1 Layers of the Skin – Anatomy & Physiology
The topmost layer, the stratum corneum, consists of dead cells that shed periodically and is progressively replaced by cells formed from the basal layer. The stratum basale also contains melanocytes, cells that produce melanin, the pigment primarily responsible for giving skin its color.
The structure and function of the stratum corneum
2012年10月1日 · The stratum corneum (SC), the skin's outermost layer and interface with the outside world is now well recognized as the barrier that prevents unwanted materials from entering, and excessive loss of water from exiting the body. This review summarizes the major advances in our understanding of this formidable membrane.
The structure and function of the stratum corneum - PubMed
2012年10月1日 · The stratum corneum (SC), the skin's outermost layer and interface with the outside world is now well recognized as the barrier that prevents unwanted materials from entering, and excessive loss of water from exiting the body. This review summarizes the major advances in our understanding of this formidable membrane.