Search results
Results From The WOW.Com Content Network
Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin.The blue colour is caused by melanocytes, melanin-containing cells, that are usually located in the surface of the skin (the epidermis), but are in the deeper region (the dermis) in the location of the spot. [6]
Freckles are clusters of concentrated melaninized cells which are most easily visible on people with a fair complexion.Freckles do not have an increased number of the melanin-producing cells, or melanocytes, but instead have melanocytes that overproduce melanin granules (melanosomes) changing the coloration of the outer skin cells (keratinocytes).
It is also extremely prevalent among East Africans and Native Americans. [5] [6] It normally disappears three to five years after birth and almost always by puberty. The most common color is blue, although they can be blue-gray, blue-black or even deep brown. The Mongolian spot is a congenital developmental condition exclusively involving the skin.
Throughout the years, I would hear admonishments that my freckles were a flaw: “There are lightening creams, you know.” “Have you been wearing sunscreen?” “If only you could get them ...
Skin reflectance vs. latitude Some people in Mongolia have light skin. In the 1960s, biochemist W. Farnsworth Loomis suggested that skin colour is related to the body's need for vitamin D. The major positive effect of UV radiation in land-living vertebrates is the ability to synthesize vitamin D3 from it.
Native Americans in the United States are defined by citizenship, culture, and familial relationships, not race. [121] [122] Having never defined Native American identity as racial, [121] historically, Native Americans have commonly practiced what mainstream society defines as interracial marriage, which has affected racial ideas of blood ...
Related: Famous faces who have battled cancer: But, the freckles spread and a few months later, Hockaday made an appointment with her dermatologist. ... It's just the kind of skin changes, and so ...
Various theories have been proposed by scholars over time in regards to the genetic makeup and population history of East Asian peoples and their connection to genetically related populations such as Southeast Asians and North Asians, as well as Oceanians, and partly, Central Asians, South Asians, and Native Americans. These scholars have come ...