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📘 Skin Structure, Disorders & Diseases – Practice Quize (25 Questions)
1. Adult skin stretched out covers approximately:
A. 1,000 in²
B. 2,000 in²
C. 3,000 in²
D. 5,000 in²
Answer: B. 2,000 in²
2. The thinnest skin is found on the:
A. Palm
B. Sole of the foot
C. Under the eye/eyelid
D. Scalp
Answer: C. Under the eye/eyelid
3. The thickest skin is found on the:
A. Elbow
B. Palms & soles
C. Cheek
D. Behind the knee
Answer: B. Palms & soles
4. Healthy skin is characterized by being:
A. Rough and dry
B. Slightly moist, soft, and flexible
C. Very oily
D. Sallow/yellowish
Answer: B. Slightly moist, soft, and flexible
5. Calluses form as a result of:
A. Exfoliation
B. Repeated friction/pressure
C. Vitamin deficiency
D. Dehydration
Answer: B. Repeated friction/pressure
6. Which skin layer does NOT exist?
A. Epidermis
B. Dermis
C. Hypodermis
D. Endodermis
Answer: D. Endodermis
7. The epidermis contains:
A. Blood vessels
B. Lymph vessels
C. Dead keratinized cells
D. Muscle
Answer: C. Dead keratinized cells
8. The stratum corneum is also known as the:
A. Clear layer
B. Horny layer
C. Spiny layer
D. Basal layer
Answer: B. Horny layer
9. Fingerprints are formed in the:
A. Stratum corneum
B. Stratum lucidum
C. Stratum granulosum
D. Stratum spinosum
Answer: B. Stratum lucidum
10. Pigment-producing cells are located in the:
A. Stratum corneum
B. Stratum basale
C. Stratum lucidum
D. Stratum granulosum
Answer: B. Stratum basale
11. Pheomelanin produces what color tones?
A. Brown–black
B. Red–yellow
C. Blue
D. White
Answer: B. Red–yellow
12. The dermis is about how much thicker than the epidermis?
A. 5×
B. 10×
C. 25×
D. 50×
Answer: C. 25×
13. The papillary layer of the dermis contains:
A. Sweat glands
B. Large blood vessels
C. Sensory corpuscles
D. Collagen bundles
Answer: C. Sensory corpuscles
14. The arrector pili muscle causes:
A. Oil secretion
B. Goosebumps
C. Sweating
D. Melanin production
Answer: B. Goosebumps
15. The hypodermis is mainly composed of:
A. Collagen
B. Fat (adipose tissue)
C. Keratin
D. Elastin
Answer: B. Fat (adipose tissue)
16. Collagen provides:
A. Elasticity
B. Strength and structure
C. Pigmentation
D. Oil
Answer: B. Strength and structure
17. Elastin provides:
A. Strength
B. Elasticity
C. Pigment
D. Hardness
Answer: B. Elasticity
18. Apocrine glands become active:
A. At birth
B. In infancy
C. After puberty
D. In old age
Answer: C. After puberty
19. Which glands are responsible for regular sweat production?
A. Apocrine
B. Eccrine
C. Sebaceous
D. Endocrine
Answer: B. Eccrine
20. Sebaceous glands secrete:
A. Sweat
B. Melanin
C. Sebum
D. Collagen
Answer: C. Sebum
21. Which is NOT a function of the skin?
A. Protection
B. Sensation
C. Thermoregulation
D. Respiration
Answer: D. Respiration
22. Which vitamin supports collagen production and wound healing?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer: C. Vitamin C
23. What percentage of skin aging is caused by the sun?
A. 25–30%
B. 40–50%
C. 60–70%
D. 80–85%
Answer: D. 80–85%
24. The ABCDE rule is used to identify:
A. Acne
B. Skin cancer
C. Ringworm
D. Dermatitis
Answer: B. Skin cancer
25. Tinea pedis is also known as:
A. Hand fungus
B. Athlete’s foot
C. Shingles
D. Herpes
Answer: B. Athlete’s foot