What produces darker skin color?

Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin color of darker-skin humans.

What stimulates and causes skin to darken?

Exposure to UVA induces immediate pigment darkening (IPD) within a short time, as little as few hours, by acting on preexisting melanin. UVA can also cause persistent pigment darkening (PPD) in the skin.

What is responsible for producing skin color?

Melanocytes
Melanocyte cells make melanin, which is a natural skin pigment that determines the color of your skin. Melanocytes produce two types of melanin that help determine how much pigment you have: Eumelanin: This type of melanin primarily makes dark colors in your hair, skin and eyes.

What is the relationship between UV radiation and skin color?

Scientists have found that differences in skin color are most highly related to geographic latitude and average dose of UV radiation (UV-R), allowing for selection of dark skin in equatorial regions of the world and light skin at the poles.

What determines the color of skin quizlet?

What determines the color of skin? The amount of melanin that melanocytes produce.

What determines the color of skin and what is the process that darken skin when it is exposed to UV light?

Exposure to the UV rays of the sun or a tanning salon causes melanin to be manufactured and built up in keratinocytes, as sun exposure stimulates keratinocytes to secrete chemicals that stimulate melanocytes. The accumulation of melanin in keratinocytes results in the darkening of the skin, or a tan.

Where is melanin produced?

melanocyte
Melanin is formed primarily in the melanocyte, located in the inner layers of the skin where melanin and carotene blend to produce the skin color as well as the color in the eyes and hair. Red hair is produced by pheomelanin in spherical melanosomes (melanin granules).

Which factor is associated with darker skin quizlet?

the amount of melanin melanocytes produce. The more melanin produced, the darker the skin.

What determines the color of skin and what is the process that darkens skin when it is exposed to UV light?

What determines the color of skin, and what is the process that darkens skin when it is exposed to UV light? The pigment melanin, produced by melanocytes, is primarily responsible for skin color. Melanin comes in different shades of brown and black.

How does UV cause melanin production?

Melanin protects skin from the sun’s ultraviolet rays. These can burn the skin and reduce its elasticity, leading to premature aging. People tan because sunlight causes the skin to produce more melanin and darken. The tan fades when new cells move to the surface and the tanned cells are sloughed off.

What determines the color of skin and what is the process that darkens skin when it is exposed to UV light quizlet?

What is the process that darkens skin when it is exposed to UV light quizlet?

Exposure to UV irradiation stimulates the melanocytes to produce and secrete more melanin.