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The variations of skin color are a result of the amount of melanin that is produced and how it is distributed. this is obvious when you are exposed to the ultraviolet rays of the sun. In order to protect your skin, melanocytes produce more melanin and, voila!, you've got a tan.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoMelanin production is activated when there is presence of light. Production of melanin is stimulated by DNA damage induced by UVB-radiation, and it leads to a delayed development of a tan.by the sun
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What is the function melanin?
Melanin gives color to the skin, hair, and iris of the eyes. Levels of melanin depend on race and amount of sunlight exposure. Sun exposure increases melanin production - to protect the skin against harmful ultraviolet rays. In addition, hormonal changes can affect melanin production.
How does ultraviolet b affect melanin?
Exposure to ultraviolet B radiation increases the production of melanin.
3 physiological factors that affect skin color?
1.melanin 2.hemoglobin 3.carotene
What is the function of melanin?
Melanin gives color to the skin, hair, and iris of the eyes. Levels of melanin depend on race and amount of sunlight exposure. Sun exposure increases melanin production - to protect the skin against harmful ultraviolet rays. In addition, hormonal changes can affect melanin production.
What causes black flecks to appear under the skin after being in the sun?
Skin tans because of a pigment in the skin known as melanin. Dark spots under the skin after sun exposure, are areas of greater melanin activation.
What determines th color of th skin?
The color of skin is primarily determined by the amount of the pigment melanin produced by specialized cells called melanocytes in the skin. The more melanin produced, the darker the skin appears. Various factors such as genetics, sun exposure, and hormonal changes can influence melanin production and thus affect skin color.
Why does the colour of skin varies among people?
Varying amounts of melanin (skin pigment) based on genes and or bodily response to irradiation from the sun. (sun exposure will cause increased melanin production, also known as getting a tan)
Why do weget tanned in sun?
When our skin get exposure to sun our skin darken. And skin darkening due to sun rays is known as tanning. Tanning is cause due acceleration in melanin.
How does melanin protect the skin fron the sun?
I believe the melanin cells take in the sun rays and dissipate it as harmless heat throughout the skin, resulting in a darker pigmentation occurring or a "tanning effect", but that in no way means you shouldn't protect your skin from the sun, because too much sun exposure is dangerous.
Why do northern hemisphere people have light hair?
People in colder climates typically get less sun exposure so God made their skin have lower levels of melanin so they could absorb more vitamin D from the sun. The low levels of melanin also translates to lighter hair and eye colors. Conversely, people who who get much more skin exposure have much more melanin to protect them from sunburn.
What is tanning effect?
Tanning is a result of exposure to sun rays. When skin gets exposure to UV rays melanin production increases. There are number of methods to remove tan, but it can take long.
Why does sun exposure increase the risk for malignant melanoma?
The melanocytes are part of the integument's photoprotective mechanism; in response to sunlight, they produce melanin that has a protective role from the sun's ultraviolet rays.
