Skin Structure & Function
Which skin layer contains blood vessels and nerves?
A. Epidermis
B. Dermis
C. Hypodermis
D. Stratum corneum
Answer: B
Rationale: The dermis contains blood vessels, nerves, sweat glands, and hair follicles.
Petechiae are:
A. Large bruises
B. Fluid-filled lesions
C. Small pinpoint hemorrhages
D. Raised scars
Answer: C
Rationale: Petechiae are tiny red or purple spots caused by bleeding under the skin.
Which UV ray is mainly responsible for sunburn?
A. UVA
B. UVB
C. UVC
D. Infrared
Answer: B
Rationale: UVB rays are mainly responsible for sunburn.
MRSA is what type of infection?
A. Viral
B. Bacterial
C. Fungal
D. Parasitic
Answer: B
Rationale: MRSA is a resistant bacterial infection.
Which acne medication is teratogenic?
A. Benzoyl peroxide
B. Oral retinoids
C. Salicylic acid
D. Topical antibiotics
Answer: B
Rationale: Oral retinoids can cause birth defects.
Which gland is responsible for body odor?
A. Eccrine gland
B. Sebaceous gland
C. Apocrine gland
D. Thyroid gland
Answer: C
Rationale: Apocrine glands produce thicker secretions associated with body odor.
Ecchymosis is another term for:
A. Rash
B. Bruising
C. Dry skin
D. Ulcer
Answer: B
Rationale: Ecchymosis refers to discoloration from bleeding under the skin.
Which skin cancer is the MOST common?
A. Melanoma
B. Basal cell carcinoma
C. Sarcoma
D. Kaposi sarcoma
Answer: B
Rationale: Basal cell carcinoma is the most common skin cancer.
Herpes zoster is also called:
A. Ringworm
B. Chickenpox
C. Shingles
D. Cellulitis
Answer: C
Rationale: Herpes zoster is shingles.
Topical retinoids commonly cause:
A. Hair growth
B. Dryness and peeling
C. Weight gain
D. Bradycardia
Answer: B
Rationale: Retinoids commonly dry and irritate the skin.
The skin helps regulate body temperature through:
A. Bone marrow
B. Sweat glands and blood flow
C. Hair growth only
D. Digestion
Answer: B
Rationale: Sweat glands and changes in blood flow help regulate heat.
Vitiligo causes:
A. Increased pigmentation
B. Hair loss
C. Loss of skin pigmentation
D. Thickened skin
Answer: C
Rationale: Vitiligo causes white depigmented patches.
Which skin cancer causes the most deaths?
A. Basal cell carcinoma
B. Squamous cell carcinoma
C. Melanoma
D. Actinic keratosis
Answer: C
Rationale: Melanoma is the deadliest skin cancer.
Which condition is caused by fungi?
A. Tinea
B. MRSA
C. Herpes simplex
D. Cellulitis
Answer: A
Rationale: Tinea infections are fungal infections.
Which intervention helps reduce itching?
A. Warm room
B. Scratching
C. Cool environment
D. Tight clothing
Answer: C
Rationale: Cool temperatures help decrease pruritus.
Which vitamin is produced by the skin with sunlight exposure?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer: D
Rationale: Sunlight helps the skin synthesize vitamin D.
Keloids are:
A. Skin infections
B. Raised scar tissue
C. Viral lesions
D. Pressure ulcers
Answer: B
Rationale: Keloids are thick overgrowths of scar tissue.
The “A” in the ABCDE melanoma rule stands for:
A. Abrasion
B. Asymmetry
C. Appearance
D. Abscess
Answer: B
Rationale: Asymmetry is a warning sign for melanoma.
Contact dermatitis is usually caused by:
A. Allergens or irritants
B. Fungi
C. Viruses
D. Genetics only
Answer: A
Rationale: Contact dermatitis occurs after exposure to irritants or allergens.
Benzoyl peroxide is used to treat:
A. Psoriasis
B. Acne
C. Cellulitis
D. Melanoma
Answer: B
Rationale: Benzoyl peroxide treats acne by reducing bacteria and oil.
Which nutrient is MOST important for wound healing?
A. Sodium
B. Protein
C. Calcium
D. Iron
Answer: B
Rationale: Protein is necessary for tissue repair and healing.
Which diagnostic test removes tissue for examination?
A. Patch test
B. Culture
C. Biopsy
D. Dermatoscopy
Answer: C
Rationale: A biopsy removes tissue for microscopic evaluation.
Actinic keratosis is considered:
A. Benign
B. Viral
C. Precancerous
D. Fungal
Answer: C
Rationale: Actinic keratosis is a precancerous skin lesion.
The priority intervention for Stevens-Johnson syndrome is:
A. Continue medication
B. Increase fluids only
C. Stop offending drug
D. Apply sunscreen
Answer: C
Rationale: The causative medication must be discontinued immediately.
Antihistamines are used to:
A. Increase itching
B. Prevent scarring
C. Reduce pruritus
D. Treat melanoma
Answer: C
Rationale: Antihistamines help decrease itching.