Question 1

Which of the following is NOT a component of the integumentary system?

Accepted Answer

Lymph nodes

Question 2

A patient presents with a bluish tint to their skin and mucous membranes. Which of the following best explains this condition?

Accepted Answer

Low oxygenation of hemoglobin

Question 3

Which layer of the epidermis is responsible for the generation of new keratinocytes through mitosis?

Accepted Answer

Stratum basale

Question 4

A surgeon is planning an incision on the skin. To minimize scarring, the incision should be made parallel to which of the following?

Accepted Answer

Lines of cleavage (tension lines)

Question 5

Which of the following best describes the function of melanin in the skin?

Accepted Answer

Protects DNA from UV radiation damage

Question 6

A patient has a burn that affects the entire thickness of the skin, appears gray-white, and is not painful. What degree of burn is this?

Accepted Answer

Third-degree

Question 7

Which of the following glands is primarily responsible for producing sebum, and what is one of its main functions?

Accepted Answer

Sebaceous gland; softens hair and skin

Question 8

A 25-year-old male presents with excessive hair growth on his face and chest. Laboratory tests reveal abnormally high androgen levels. What is the most likely diagnosis?

Accepted Answer

Hirsutism

Question 9

Which of the following best explains why the skin is able to act as a physical barrier to most water and water-soluble substances?

Accepted Answer

Keratinized cells surrounded by glycolipids in the stratum corneum

Question 10

A patient is exposed to a chemical that is lipid-soluble. Which of the following best describes the likely outcome?

Accepted Answer

The chemical can penetrate the skin and enter the bloodstream

Question 11

Which of the following is a function of the arrector pili muscle?

Accepted Answer

Contracts to cause 'goose bumps'

Question 12

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 13

Which of the following best describes the process of keratinization?

Accepted Answer

Keratinocytes flatten, organelles disintegrate, and keratin accumulates as they move toward the surface

Question 14

A patient presents with a yellowish skin tone. Which of the following is the most likely cause?

Accepted Answer

Jaundice due to liver disorder

Question 15

Which of the following best explains why third-degree burns are not initially painful?

Accepted Answer

Nerve endings in the affected area are destroyed

Question 16

A patient has a scaly, reddened papule on their hand that was diagnosed as squamous cell carcinoma. Which layer of the epidermis is primarily involved?

Accepted Answer

Stratum spinosum

Question 17

Which of the following best describes the function of eccrine (merocrine) sweat glands?

Accepted Answer

Secrete sweat for thermoregulation

Question 18

A 30-year-old woman develops a rash after using a new perfume and being exposed to sunlight. What is the most likely explanation for her symptoms?

Accepted Answer

Photoreactivity caused by the perfume

Question 19

Which of the following best explains the role of the skin in vitamin D synthesis?

Accepted Answer

UV light converts a cholesterol derivative in the skin to vitamin D precursor

Question 20

A patient with a large burn is at risk for which of the following immediate, life-threatening complications?

Accepted Answer

Dehydration and electrolyte imbalance

The Integumentary System: Structure, Function, and Clinical Relevance

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