Exam 4 Part 2 Skin color

Question 1

What causes PINK skin coloring?

Answer 1

Blood flow in dermis & subcutaneous layers

Question 2

What causes YELLOW skin coloring?

Answer 2

• Carotene: yellowish pigment acquired through diet

- Having a thicker stratum corneum w/ increased amount of the structural protein KERATIN

Question 3

What causes BROWN skin coloring?

Answer 3

• Due to melanin produced by melanocytes found in the stratum basale

Question 4

Human skin color differences are primarily due to differences in the amount of ______ produced by melanocytes

Answer 4

Melanin

Question 5

T/F everyone has the SAME amount of the melanocytes

Answer 5

true

Question 6

Small, isolated patches of highly concentrated melanin secretion

Answer 6

Freckles

Question 7

Dark skin which is found in areas closer to the equator serve to protect against?

Answer 7

Cell damage due to excessive UVR

Question 8

_____ absorbs the UVR & prevents excessive amounts to reach the mitotic cells of the stratum _______ and dermis

Answer 8

Melanin; germinativum

Question 9

Presence of a thicker stratum ______ also prevents excessive UVR reaching the lower mitotic layers

Answer 9

Corneum

Question 10

Melanocytes respond to increased amounts of UVR by producing more melanin

Answer 10

Tanning

Question 11

Production of Vit. D by the body is dependent upon sufficient amounts of UVR reaching the ____ to facilitate this chemical process

Answer 11

Dermis

Question 12

Deficiency of vit. D in children results is?

Answer 12

Rickets

Question 13

Deficiency of vit. D in adults results in?

Answer 13

Osteomalacia

Question 14

What skin type is more susceptible to frostbite?

Answer 14

Dark skin tones