mercredi 31 octobre 2012

Ear wax : Composition and Role

The wax is composed mainly of wax itself, keratin debris and hair. The composition of the wax is dry than that of the liquid wax. Constituents vary not only in quantity but also in quality. Earwax contains a mixture of fats (lipids), free amino acids and many minerals, including copper and iron. Between different types of wax, there are mostly variations in the fat.

The main function of the wax is to protect the skin of the external auditory canal in the lubricant. The wax film is not only a chemical barrier, but also a real trap foreign matter such as dust or other small debris flying in the air. The wax also has antibacterial function, normally preventing the development of otitis externa in any contact with bacteria. A thin layer of wax is beneficial for ear protection and strive to remove can only be cons-productive. The absence of ear wax can cause itching and irritation of the outer ear canal. Earwax has no acoustic role as imagined in the early nineteenth century. In the Middle Ages, the wax has been used by artists as a pigment in the production of illuminated manuscripts.

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