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Short Essay On Hair Histology

750 Words3 Pages

Hair histology
The hair is divided into two parts: the hair root and the hair shaft. Hair is structured in the form of fibers and is composed of 70% keratin and 30% of water, fat, carbohydrates, vitamins and other minerals.

Hair roots also called hair follicles, are located under the scalp. The lower part of the hair shaft is the papilla, it is covered with a lot of dermal papillae, which is made up of many blood vessels as well as other compounds to feed the hair. Around the hair, the root is the sebaceous glands and sweat glands, which through the skin excrete fatty compounds, which help lubricate the hair as well as the surface of the skin.

The hair shaft is the hair extension on the scalp. It does not have biochemical metabolism and not able to recover itself. The hair shaft is made up of 3 layers:
Medulla is the innermost layer of hair, containing keratin cells. …show more content…

Melanin is a natural pigment that determines the color of the hair. There are two types of Melanin: Eumelanin (dark brown pigment) and Pheomelanin (red pigment). In general, the more Eumelanin, the darker the hair, and reversed. The rate of melanin varies over time, so the hair color of the sister also changes with age. As aging progresses, the pigmentation decreases and the hair color fades. If there is no pigment left, the hair will be white. In addition, racial factors also affect hair color. Depending on the influence of the environment, genetics, age at which melanin pigmentation changes at the core of the hair. Makes hair change from black to grey or blond to brown. So, the middle layer of this hair determines the strength and color of your

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