What is the role of UVB rays?

What is the role of UVB rays?

• A. They suppress skin aging
• B. They are primarily responsible for causing sunburn
• C. They are used in phototherapy
• D. They emit no harmful effects

Answer: (B)

UVB rays play a significant role in the skin's response to sunlight, primarily because they are the main culprits behind sunburn. When skin is exposed to UVB rays, they penetrate the outer layer and can lead to inflammation, redness, and pain associated with sunburn. This response is a protective mechanism, as the body tries to repair the damage caused by this type of ultraviolet radiation. The unique characteristic of UVB rays is their intensity, which varies with the time of year, geographical location, and even the time of day, making them a key factor in short-term skin damage. Understanding their role helps individuals take appropriate precautions to protect their skin and mitigate the risks of sunburn and long-term effects like skin cancer.

UVB rays play a significant role in the skin's response to sunlight, primarily because they are the main culprits behind sunburn. When skin is exposed to UVB rays, they penetrate the outer layer and can lead to inflammation, redness, and pain associated with sunburn. This response is a protective mechanism, as the body tries to repair the damage caused by this type of ultraviolet radiation.

The unique characteristic of UVB rays is their intensity, which varies with the time of year, geographical location, and even the time of day, making them a key factor in short-term skin damage. Understanding their role helps individuals take appropriate precautions to protect their skin and mitigate the risks of sunburn and long-term effects like skin cancer.