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 eyes. Which underlying condition is most likely responsible for this clinical sign?

Accepted Answer

Liver disorder

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

Which pigment is responsible for the pinkish hue of fair skin, and where is it primarily found?

Accepted Answer

Hemoglobin; blood in dermal capillaries

Question 5

A burn patient is at immediate risk for which of the following complications due to the loss of skin barrier function?

Accepted Answer

Dehydration and electrolyte imbalance

Question 6

Which of the following glands is most responsible for thermoregulation and is abundant on the palms, soles, and forehead?

Accepted Answer

Eccrine (merocrine) sweat glands

Question 7

A person with a genetic mutation causing nonfunctional melanocytes would most likely exhibit which of the following symptoms?

Accepted Answer

Lack of skin pigmentation and increased sensitivity to UV radiation

Question 8

Which of the following best explains why incisions made parallel to cleavage (tension) lines in the skin tend to heal more readily?

Accepted Answer

They run in the same direction as the majority of collagen fibers, reducing gaping and scarring.

Question 9

Which of the following is a function of sebum produced by sebaceous glands?

Accepted Answer

Killing bacteria and softening hair and skin

Question 10

A patient presents with a black-and-blue mark after an injury. What is the physiological basis for this coloration?

Accepted Answer

Clotted blood beneath the skin (hematoma)

Question 11

Which of the following best describes the difference between eccrine and apocrine sweat glands?

Accepted Answer

Eccrine glands are involved in thermoregulation, while apocrine glands are associated with scent and begin functioning at puberty.

Question 12

Which of the following is NOT a function of the skin?

Accepted Answer

Production of red blood cells

Question 13

A patient with uncontrolled diabetes develops horizontal lines across their nails. What is the clinical term for this finding?

Accepted Answer

Beau’s lines

Question 14

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 15

Which of the following structures is responsible for producing hair color?

Accepted Answer

Melanocytes in the hair follicle

Question 16

Which of the following is a correct sequence of the layers of the epidermis in thick skin, from deepest to most superficial?

Accepted Answer

Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

Question 17

A person is exposed to poison ivy, which penetrates the skin. Which barrier property of the skin is being bypassed?

Accepted Answer

Physical barrier

Question 18

Which of the following best describes the function of the arrector pili muscle?

Accepted Answer

It contracts to cause hair to stand upright, producing 'goose bumps'.

Question 19

Which of the following is a real-life example of the metabolic function of the skin?

Accepted Answer

Synthesis of vitamin D when exposed to sunlight

Question 20

A surgeon plans an incision on the palm. To minimize scarring, the incision should be made:

Accepted Answer

Parallel to the cleavage (tension) lines

The Integumentary System: Structure, Function, and Clinical Relevance

Study Guide - Practice Questions