| 词条 | Acid mantle |
| 释义 |
The acid mantle is a very fine, slightly acidic film on the surface of human skin acting as a barrier to bacteria, viruses and other potential contaminants that might penetrate the skin.[1] Sebum is secreted by the sebaceous gland and when mixed with sweat becomes the acid mantle. The pH of the skin is between 4.5 and 6.2, slightly acidic.[2][3] Since blood is slightly alkaline (7.4), pathogenic bacteria that become adapted to the pH of the skin and are able to reach internal tissues will encounter an environment to which they are less well adapted. This combination of acidic exterior and alkaline interior is one of the body's non-specific host defenses against bacterial pathogens. References1. ^{{cite book|author1=Monika-Hildegard Schmid-Wendtner|author2=Korting Schmid-Wendtner|title=Ph and Skin Care|url=https://books.google.com/books?id=AWEDzXOAivgC&pg=PA31|accessdate=19 June 2012|year=2007|publisher=ABW Wissenschaftsverlag|isbn=978-3-936072-64-8|pages=31–}} {{anatomy-stub}}2. ^{{cite journal |author=Zlotogorski A |title=Distribution of skin surface pH on the forehead and cheek of adults |journal=Arch. Dermatol. Res. |volume=279 |issue=6 |pages=398–401 |year=1987 |pmid=3674963 |doi= 10.1007/bf00412626|url=}} 3. ^{{cite journal |vauthors=Schmid MH, Korting HC |title=The concept of the acid mantle of the skin: its relevance for the choice of skin cleansers |journal=Dermatology |volume=191 |issue=4 |pages=276–80 |year=1995 |pmid=8573921 |doi=10.1159/000246568 |url=http://www.sebamed.com/fileadmin/user_upload/pdf/Studien/Saeuremantelkonzept/1.05.pdf |access-date=2012-06-20 |archive-url=https://web.archive.org/web/20110301151916/http://www.sebamed.com/fileadmin/user_upload/pdf/Studien/Saeuremantelkonzept/1.05.pdf |archive-date=2011-03-01 |dead-url=yes |df= }} 1 : Skin anatomy |
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