Question 1

Which of the following is NOT a primary function of the integumentary system?

Accepted Answer

Blood cell formation

Question 2

A patient presents with a skin lesion that is asymmetrical, has irregular borders, multiple colors, a diameter greater than 6 mm, and is evolving. According to the ABCDE rule, which type of skin cancer is most concerning?

Accepted Answer

Melanoma

Question 3

Which layer of the epidermis is responsible for the continuous regeneration of skin cells?

Accepted Answer

Stratum basale (germinativum)

Question 4

Which pigment is primarily responsible for protecting the skin against UV radiation?

Accepted Answer

Melanin

Question 5

A patient with a burn injury loses the ability to regulate body temperature and experiences excessive water loss. Which function of the integumentary system has been compromised?

Accepted Answer

Temperature regulation

Question 6

Which accessory skin structure is responsible for producing sebum, an oily substance that lubricates the skin?

Accepted Answer

Sebaceous glands

Question 7

Thick skin, found on the palms and soles, differs from thin skin in which of the following ways?

Accepted Answer

It has five epidermal strata, including the stratum lucidum

Question 8

Which layer of the dermis is responsible for fingerprints and contains capillaries that supply nutrients to the epidermis?

Accepted Answer

Papillary layer

Question 9

A deficiency in which function of the integumentary system would most likely result in decreased calcium absorption from the diet?

Accepted Answer

Vitamin D production

Question 10

Which cell type in the epidermis is responsible for detecting light touch and transmitting sensory information?

Accepted Answer

Merkel cell

Question 11

A patient has a wound that penetrates deep into the skin, reaching the subcutaneous tissue. Which of the following is a function of the subcutaneous tissue?

Accepted Answer

Mechanical protection and insulation

Question 12

Which of the following equations best represents the relationship between skin surface area ($$A$$), rate of water loss ($$R$$), and time ($$t) in a $$patient with severe burns, assuming $$R is $$proportional to $$A$$ and $$t$$?

Accepted Answer

$$R = k 	imes A 	imes t$$

Question 13

Which gland is most likely to be involved in the production of earwax?

Accepted Answer

Ceruminous gland

Question 14

A patient presents with a yellowish skin tone. Which pigment is most likely responsible for this coloration?

Accepted Answer

Carotene

Question 15

Which of the following best describes the role of nails in the integumentary system?

Accepted Answer

They provide mechanical protection for the tips of fingers and toes

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

Which of the following clinical signs is NOT part of the ABCDE rule for identifying melanoma?

Accepted Answer

Color uniformity

Question 18

Which of the following best explains why the skin is able to sense pain, pressure, and temperature?

Accepted Answer

Presence of specialized sensory receptors in the dermis and epidermis

Question 19

A patient with a genetic defect in Langerhans cells would most likely have problems with which function of the skin?

Accepted Answer

Immune defense against pathogens

Question 20

Which of the following statements about sweat glands is TRUE?

Accepted Answer

They play a role in temperature regulation and excretion

Chapter 5: The Integumentary System – Structure, Function, and Clinical Relevance

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