Tanning, UV Radiation, Skin Cancer| Exam Questions with Correct Answers 100% Verified|
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characteristics of UVB UVB:
1. shorter wavelengths that penetrate the surface layers like the epidermis
2. burning skin *intense
3. 5% is past the ozone
4. ozone strong at blocking out UVB
How does UVA produce a tan? It rapidly tans the skin by oxidizing the existing melanin in the
skin. This causes the melanin to turn darker, making a dark appearance.
How does UVB produce a tan? UVB stimulates melanocytes to make more melanin; it
damages the DNA in the skin cells so more melanin is produced to protect the skin from further
damage.
One benefit of UVB exposure: It stimulates the production of vitamin D from the skin.
Vitamin D is essential for healthy bones.
What is melanoma? The cancer of melanocytes; rarest type and deadliest type; it spreads to
other parts of the body
List all factors that can put you at risk of developing skin cancer: excessive exposure to UVR;
use of tanning bed at early age; pale skin and poor tanning response; multiple sunburns in
childhood; genetics; red-heads; men at risk more
What has caused Western populations to desire tans? Tans are associated with a lifestyle of
outdoor fitness and wealth that could fund vacations to sunny destinations. It is a new status
symbol.
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characteristics of UVB UVB:
1. shorter wavelengths that penetrate the surface layers like the epidermis
2. burning skin *intense
3. 5% is past the ozone
4. ozone strong at blocking out UVB
How does UVA produce a tan? It rapidly tans the skin by oxidizing the existing melanin in the
skin. This causes the melanin to turn darker, making a dark appearance.
How does UVB produce a tan? UVB stimulates melanocytes to make more melanin; it
damages the DNA in the skin cells so more melanin is produced to protect the skin from further
damage.
One benefit of UVB exposure: It stimulates the production of vitamin D from the skin.
Vitamin D is essential for healthy bones.
What is melanoma? The cancer of melanocytes; rarest type and deadliest type; it spreads to
other parts of the body
List all factors that can put you at risk of developing skin cancer: excessive exposure to UVR;
use of tanning bed at early age; pale skin and poor tanning response; multiple sunburns in
childhood; genetics; red-heads; men at risk more
What has caused Western populations to desire tans? Tans are associated with a lifestyle of
outdoor fitness and wealth that could fund vacations to sunny destinations. It is a new status
symbol.
