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Skin: The Incredible Organ

Question 20

Which treatment helps to reduce the appearance of age spots?

A.Hydrocortisone cream

B.Alumina LED face mask

C.Chemical peel

D.Retinol serum

Question 1

What layer of the skin do skin cancers arise from?

A.Dermis

B.Hypodermis

C.Epidermis

D.Subcutaneous layer

Question 2

What percentage of the epidermis is made up of keratinocytes?

A.50%

B.90%

C.70%

D.30%

Question 3

What type of cells produce melanin in the skin?

A.Keratinocytes

B.Melanocytes

C.Fibroblasts

D.Adipocytes

Question 4

Which type of skin cancer is known to be potentially deadly?

A.Basal cell carcinoma

B.Squamous cell carcinoma

C.Malignant melanoma

D.Lentigenes

Question 5

What is the primary cause of mutated DNA leading to skin cancer?

A.Genetic factors

B.Dietary choices

C.UV exposure

D.Chemical exposure

Question 6

How are benign moles, or nevi, formed?

A.Overgrowth of keratinocytes

B.Overgrowth of melanocytes

C.Lack of melanin

D.Infection

Question 7

What term refers to freckles caused by sun damage?

A.Folies

B.Nevi

C.Lentigenes

D.Melanoma

Question 8

What is an important function of the stratum basale?

A.Producing lipids for waterproofing

B.Replenishing skin cells

C.Flattening cells to create layers

D.Forming calluses

Question 9

What layer of the skin is known as the growth layer?

A.Stratum corneum

B.Stratum lucidum

C.Stratum basale

D.Stratum granulosum

Question 10

Which skin condition is NOT caused by UV exposure?

A.Type of freckles called filies

B.Lentigenes

C.Squamous cell carcinoma

D.Basal cell carcinoma

Question 11

What do the cytoplasmic extensions of melanocytes do?

A.Store fats

B.Transmit nerve signals

C.Distribute melanin

D.Break down dead cells

Question 12

How can oil secreted by the cells help your skin?

A.Repel UV rays

B.Fight infections

C.Waterproof the skin

D.Increase softness

Question 13

Which skin layer is variable and found only on palms and soles?

A.Stratum corneum

B.Stratum lucidum

C.Stratum basale

D.Stratum granulosum

Question 14

What are the features of malignant melanoma?

A.Symmetrical shape

B.Regular border

C.Potentially mixed colors

D.Small diameter

Question 15

Which cells help to bind keratinocytes together?

A.Melanocytes

B.Fibroblasts

C.Keratinocytes themselves

D.Adipocytes

Question 16

Why is early detection important in cancer?

A.It reduces the need for treatment

B.It often leads to better outcomes

C.It guarantees a cure

D.It prevents all complications

Question 17

What mnemonic helps to identify potentially cancerous moles?

A.ABCDE

B.UVABC

C.SKINDO

D.MOLEXL

Question 18

Why do cells in the stratum granulosum appear granulated?

A.Presence of fat deposits

B.Presence of lipid granules

C.Presence of melanin

D.Presence of connective tissue

Question 19

What does the stratum corneum protect against?

A.Dehydration

B.Infections

C.Radiation

D.Friction