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OTC Therapy > Sun-Induced Skin Disorders > Flashcards

Sun-Induced Skin Disorders Flashcards

1
Q

UV spectrum represents ____% of total solar energy

A

<10

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2
Q

UV-B wavelengths are found in ___ to ___nm

A

290-320

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3
Q

UV-A wavelengths are found in ___ to ___nm

A

320-400

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4
Q

Which UV wavelength produces redness + erythema?

A

UV-B

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5
Q

Which UV wavelength penetrates deeper into skin?

A

UV-A

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6
Q

Wavelengths of ____ to ____ are visible to human eye

A

400 + 700

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7
Q

What is the outermost epidermal layer?

A

Stratum corneum

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8
Q

What is a chromophore?

A

Exogenous or endogenous photo-abosrbing chemicals in the skin

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9
Q

What causes skin to absorb, excite and transfer energy to make ROS that structurally damages skin?

A

Chromophore

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10
Q

What layer of the skin is a major absorber of UV-B?

A

Stratum corneum

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11
Q

The underlying dermis is rich in _____ and ______

A

collagens + elastin

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12
Q

UV-A readily penetrates the ______

A

dermis

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13
Q

Melanoma vs Nonmelanoma

Risk increases w/ age

A

Both

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14
Q

Melanoma vs Nonmelanoma

Develops in upper and middle epidermis

A

Nonmelanoma

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15
Q

Melanoma vs Nonmelanoma

Begins in lowest layer of epidermis

A

Malanoma

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16
Q

Melanoma vs Nonmelanoma

Risk factors include: males, moles, tanning beds, etc

A

Nonmelanoma

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17
Q

What is the ABCDE rule of moles?

A 
Asymmetry
Border
Color
Diameter (>6mm)
Evolving
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18
Q

When is the highest intensity of sunburn (erythema)

A

10am to 4pm

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19
Q

UV-A vs UV-B

Primary inducer of skin cancer

A

UV-B

20
Q

UV-A vs UV-B

Causes immunosuppression

A

UV-A

21
Q

UV-A vs UV-B

DNA + tissue damage which lead to photoaging

A

UV-A

22
Q

UV-A vs UV-B

Has therapeutic effects such as Vit. D synthesis

A

UV-B

23
Q

(T/F) Cloud covers filter most UVR

A

False; very little coverage

24
Q

When using tanning beds, UV-B exposure should be restricted to not more than ___% and most have ____% UV-A (greater than natural sunlight)

A

5 + 96

25
Q

(Higher/Lower) altitude increases UVR exposure

A

Higher

26
Q

Being (close to/far away from) the equator increases UVR exposure

A

close to

27
Q

Higher altitude (increases/decreases) UVR exposure

A

increases

28
Q

Proximity to equator (increases/decreases) UVR exposure

A

increases

29
Q

Window glass blocks (UV-A/UV-B) penetration but not (UV-A/UV-B)

A

UV-B + UV-A

30
Q

Most car windshields use laminated glass which filter out most of UV-__ except side windows

A

A

31
Q

Fresh snow reflects ____% of radiation

A

80-85

32
Q

Soil, grass, and water reflect ____% of radiation

A

<5

33
Q

Which is more protective, dry or wet fabric?

A

Dry fabric

34
Q

The skin tans by producing _____

A

melanin

35
Q

Sunburns are a result of vaso(dilation/constriction) of dermal blood vessels

A

dilation

36
Q

Sunsburns develop about __-___ hours after exposure but peaks about __-__ hours

A

4 to 12 + 12 to 24

37
Q

Melanin provides photoprotection, but not ____ protection

A

cancer

38
Q

What age group should not use sunscreen?

A

<6 months in age

39
Q

SPF 2-14 provides UV-__ and sunburn protection

A

B

40
Q

SPF __ is the minimum for skin cancer prevention

A

15

41
Q

SPF ___ is for someone w/ light skin that easily burns + rarely tans

A

30

42
Q

SPF ___ is the maximum you should use

A

50

43
Q

What is used to calculate SPF?

A

Minimal erythema dose (MED)

44
Q

What do chemical sunscreens do to UVR?

A

Absorbs + blocks transmission of UVR to epidermis

45
Q

Who do physical sunscreens do to UVR?

A

Opaque and reflects/scatter UVR

OTC Therapy (43 decks)

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