skin cancer & aging

Question 1

skin cancer

Answer 1

MOST COMMON type of cancer
-main cause = overexposure to UV which damages DNA in epidermal cells

-melanin affects likelihood→more melanin less risk

Question 2

3 major types

Answer 2

1. basal cell carcinoma
2. squamous cell carcinoma
3. melanoma

Question 3

basal cell carcinoma

Answer 3

MOST COMMON
-cells of stratum basale
-varied appearance
-cured by removal or destruction

Question 4

squamous cell carcinoma

Answer 4

-cells of stratum spinosum
-varied appearance; may bleed
-most cured by removal or destruction

Question 5

melanoma

Answer 5

MOST DEADLY
-cancer of melanocytes
-caused by accumulated DNA damage
-appears as a spreading brown/black patch
-metastasizes (spreads) rapidly to lymph and blood vessels

Question 6

melanoma ABCDE rule

Answer 6

A-asymmetry
B-border irregularity
C-color (not uniform)
D-diameter (>6 mm)
E-evolving