stratum corneum

noun

stratum cor·ne·um -ˈkȯr-nē-əm How to pronounce stratum corneum (audio)

: the outermost layer of the epidermis that consists of keratin-rich corneocytes connected by desmosomes and embedded in a matrix of lipids (such as ceramides and cholesterol) arranged in bilayers and that regulates skin permeability, maintains hydration, provides structural integrity, and acts as a protective barrier (as against UV radiation, pathogens, and toxins)

Note: In humans, the stratum corneum is typically 12 to 20 cell layers thick but may be over 50 layers thick in the soles of the feet and less than 9 layers thick on the eyelids. The outer layers are continually shed with one corneocyte cell layer typically sloughed off every day as desmosomes are enzymatically broken down.

The stratum corneum barrier relies predominantly on the extracellular matrix, where lamellar bilayers block the outflow of water into the environment … .

Peter M. Elias et al.

A primary function of the stratum corneum is to protect the underlying tissue from environmental injury.

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Example Sentences

Recent Examples on the Web Again, almost all potential benefits of steaming your face, including product absorption, go back to the stratum corneum softening up.

Mara Santilli, SELF, 28 Feb. 2022 Most of the damage, though, occurs at the stratum corneum, or the outermost layer of the skin, which turns white, indicating that the peroxide is breaking down protein and fats.

Sudiksha Kochi, USA TODAY, 5 Feb. 2022 As the skin is the primary interface between our body and the external environment, its most critical role is to provide a strong physiological barrier, which is mediated by the outermost layer of the epidermis, the stratum corneum.

Alex Zhavoronkov, Forbes, 27 Apr. 2021 Across Instagram, Twitter, and TikTok, skin care pros and enthusiasts have switched their focus from instant-gratification products like acids and peels to the somewhat unsexy stratum corneum (the technical term for your skin moisture barrier).

Bella Cacciatore, Glamour, 22 Jan. 2021 There are two categories of ingredients found in moisturizing skincare products that can help maintain the ideal water content in the outer layer of skin (a.k.a. the stratum corneum) to counteract dryness.

Sabina Wizemann, Good Housekeeping, 28 Dec. 2020 The top layer of our skin (the stratum corneum) is our skin’s key protective layer.

Popular Science, 18 Apr. 2020 Ceramides Ceramides are an important part of the stratum corneum, the skin’s natural protective barrier.

Sarah Jacoby, SELF, 26 Feb. 2020 The outer layer of skin—the stratum corneum—functions as the skin’s main protective barrier.

Sarah Jacoby, SELF, 15 Jan. 2020 See More

单词	stratum corneum
释义	stratum corneum noun stratum cor·ne·um -ˈkȯr-nē-əm : the outermost layer of the epidermis that consists of keratin-rich corneocytes connected by desmosomes and embedded in a matrix of lipids (such as ceramides and cholesterol) arranged in bilayers and that regulates skin permeability, maintains hydration, provides structural integrity, and acts as a protective barrier (as against UV radiation, pathogens, and toxins) Note: In humans, the stratum corneum is typically 12 to 20 cell layers thick but may be over 50 layers thick in the soles of the feet and less than 9 layers thick on the eyelids. The outer layers are continually shed with one corneocyte cell layer typically sloughed off every day as desmosomes are enzymatically broken down. The stratum corneum barrier relies predominantly on the extracellular matrix, where lamellar bilayers block the outflow of water into the environment … . Peter M. Elias et al. A primary function of the stratum corneum is to protect the underlying tissue from environmental injury. Discover Example Sentences Recent Examples on the Web Again, almost all potential benefits of steaming your face, including product absorption, go back to the stratum corneum softening up. Mara Santilli, SELF, 28 Feb. 2022 Most of the damage, though, occurs at the stratum corneum, or the outermost layer of the skin, which turns white, indicating that the peroxide is breaking down protein and fats. Sudiksha Kochi, USA TODAY, 5 Feb. 2022 As the skin is the primary interface between our body and the external environment, its most critical role is to provide a strong physiological barrier, which is mediated by the outermost layer of the epidermis, the stratum corneum. Alex Zhavoronkov, Forbes, 27 Apr. 2021 Across Instagram, Twitter, and TikTok, skin care pros and enthusiasts have switched their focus from instant-gratification products like acids and peels to the somewhat unsexy stratum corneum (the technical term for your skin moisture barrier). Bella Cacciatore, Glamour, 22 Jan. 2021 There are two categories of ingredients found in moisturizing skincare products that can help maintain the ideal water content in the outer layer of skin (a.k.a. the stratum corneum) to counteract dryness. Sabina Wizemann, Good Housekeeping, 28 Dec. 2020 The top layer of our skin (the stratum corneum) is our skin’s key protective layer. Popular Science, 18 Apr. 2020 Ceramides Ceramides are an important part of the stratum corneum, the skin’s natural protective barrier. Sarah Jacoby, SELF, 26 Feb. 2020 The outer layer of skin—the stratum corneum—functions as the skin’s main protective barrier. Sarah Jacoby, SELF, 15 Jan. 2020 See More Word History Etymology New Latin, literally, horny layer First Known Use 1857, in the meaning defined above Medical Definition stratum corneum noun plural strata cornea : the outer more or less horny part of the epidermis consisting chiefly of layers of dead flattened nonnucleated cells filled with keratin
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stratum corneum

noun

Example Sentences

Word History

Medical Definition

noun