Chapter 17 :: Cutaneous Photobiology Flashcards by C A | Brainscape

Q

Ultraviolet B

A

290 nm-315 nm

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Q

UVB

A

Delayed melanogenesis (peaks at 3 days)

Penetrates no deeper than the upper dermis

Role in vitamin D production

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Q

vitamin D upper limit

A

10,000 IU daily is considered a safe upper limit for adult intake

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Q

chromophore that absorbs UVB and initates synthesis of vitamin D

A

7-dehydrocholesterol

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Q

chromophore for the sunburning reaction

A

DNA

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Q

chromophore for UVR-induced tanning

A

DNA

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Q

Fitz Type III

A

Sometimes burns, can tan without orior burn

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