Question 1

Which of the following best describes the main function of the stratum basale in the epidermis?

Accepted Answer

It is the primary site of active mitosis, producing new keratinocytes.

Question 2

A patient presents with a yellowish tint to their skin and the whites of their eyes. Which underlying condition is most likely responsible for this appearance?

Accepted Answer

Liver disorder causing jaundice

Question 3

Which of the following statements about the dermis is correct?

Accepted Answer

It contains two layers: the papillary layer and the reticular layer.

Question 4

A surgeon is planning an incision on a patient’s back. To minimize scarring and promote faster healing, the incision should be made:

Accepted Answer

Parallel to the cleavage (tension) lines

Question 5

Which of the following best explains why third-degree burns are often painless?

Accepted Answer

They destroy the entire thickness of the skin, including nerve endings.

Question 6

Which gland is responsible for producing a watery secretion that helps regulate body temperature and is most abundant on the palms, soles, and forehead?

Accepted Answer

Eccrine (merocrine) sweat gland

Question 7

A 25-year-old woman develops coarse, terminal hair on her face and chest. Which of the following is the most likely cause?

Accepted Answer

Excess androgen production (hirsutism)

Question 8

Which of the following is a function of the acid mantle of the skin?

Accepted Answer

It retards bacterial multiplication by maintaining a low pH.

Question 9

A patient presents with a scaly, reddened papule on their lower lip. Biopsy reveals abnormal keratinocytes in the stratum spinosum. What is the most likely diagnosis?

Accepted Answer

Squamous cell carcinoma

Question 10

Which of the following best describes the process of keratinization in the epidermis?

Accepted Answer

Keratinocytes accumulate keratin and glycolipids as they move from the stratum basale to the stratum corneum.

Question 11

A patient with a severe burn is at immediate risk for which of the following complications?

Accepted Answer

Dehydration and electrolyte imbalance

Question 12

Which pigment is produced in the skin and is responsible for protecting DNA from UV damage?

Accepted Answer

Melanin

Question 13

A patient is diagnosed with telogen effluvium after experiencing severe emotional trauma. What is the underlying mechanism?

Accepted Answer

An abundance of hair follicles entering the resting phase simultaneously

Question 14

Which of the following best explains why the skin of elderly individuals is more prone to injury and infection?

Accepted Answer

Decreased numbers of melanocytes and dendritic cells

Question 15

Which of the following is a correct statement about the structure of hair?

Accepted Answer

The cortex surrounds the medulla and is composed of several layers of flattened cells.

Question 16

A patient presents with spoon-shaped nails (koilonychia). Which underlying condition should be considered?

Accepted Answer

Iron deficiency anemia

Question 17

Which of the following best describes the secretion mode of sebaceous glands?

Accepted Answer

Holocrine secretion

Question 18

A child presents with pink, raised lesions on the scalp that turn yellow and flake off. This is most likely due to:

Accepted Answer

Overactive sebaceous glands (seborrhea/cradle cap)

Question 19

Which of the following is a metabolic function of the skin?

Accepted Answer

Synthesis of vitamin D for calcium absorption

Question 20

A patient is exposed to organic solvents without gloves. Which organ system is at greatest risk for immediate damage due to absorption through the skin?

Accepted Answer

Renal (kidney) system

The Integumentary System: Structure, Function, and Clinical Aspects

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