MELANOCYTE Meaning and
Definition
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A melanocyte is a specialized cell found primarily in the skin, hair follicles, and eyes, responsible for producing and distributing the pigment melanin. Melanin is a dark brown to black pigment that gives color to the skin, hair, and eyes, protecting them from the harmful effects of ultraviolet (UV) radiation from the sun. It is also involved in determining the skin's color and contributes to the tanning response.
Melanocytes are derived from the neural crest during embryonic development. They are located in the basal layer of the epidermis, which is the outermost layer of the skin, as well as in the hair follicles and the iris of the eye. These cells have long, branching extensions called dendrites that extend between the surrounding cells, allowing them to distribute melanin to neighboring cells.
The production of melanin is regulated by various factors, including genes, hormones, and exposure to UV radiation. Overactivity or dysfunction of melanocytes can lead to conditions such as hyperpigmentation, where areas of the skin become darker, or hypopigmentation, where areas become lighter. Diseases such as albinism, vitiligo, and melanoma are also associated with impaired melanocyte function.
Melanocytes play a crucial role in protecting the body from the harmful effects of UV radiation and are an essential component of the body's defense against sun damage.
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A pigmented ameboid cell or leucocyte.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for MELANOCYTE
Etymology of MELANOCYTE
The word "melanocyte" is derived from the Greek roots "melanos" meaning "black" or "dark", and "kytos" meaning "cell". Thus, "melanocyte" literally translates to "black cell" or "dark cell". This name accurately describes the primary function of melanocytes, as they are responsible for producing the pigment melanin, which gives color to the skin, hair, and eyes.
Similar spelling words for MELANOCYTE
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