Question 1

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

Accepted Answer

It provides a barrier against biological, chemical, and physical assaults due to its layers of dead, keratinized cells.

Question 2

A patient presents with a yellowish tint to their skin and the whites of their eyes. Which condition is most likely indicated, and what is the underlying cause?

Accepted Answer

Jaundice; caused by liver disorders leading to accumulation of bilirubin.

Question 3

Which of the following statements about the hypodermis is correct?

Accepted Answer

It is composed mostly of adipose tissue and functions in shock absorption and insulation.

Question 4

A surgeon is planning an incision on a patient’s back. Why is it important to consider the orientation of cleavage (tension) lines in the dermis?

Accepted Answer

Incisions parallel to cleavage lines heal more readily and with less scarring.

Question 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

Melanin

Question 7

A patient is diagnosed with hirsutism. Which of the following is the most likely underlying cause?

Accepted Answer

Excessive androgen production due to ovarian or adrenal tumors

Question 8

Which of the following is a function of eccrine (merocrine) sweat glands?

Accepted Answer

Thermoregulation through the production of watery sweat

Question 9

A person with a genetic mutation that prevents the production of keratohyaline granules would most likely have defects in which layer of the epidermis?

Accepted Answer

Stratum granulosum

Question 10

Which of the following best describes the role of dendritic (Langerhans) cells in the epidermis?

Accepted Answer

They activate the immune system by presenting antigens to white blood cells.

Question 11

A patient presents with a black-and-blue mark after a fall. What is the physiological explanation for this observation?

Accepted Answer

It is due to clotted blood beneath the skin, known as a hematoma.

Question 12

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

Accepted Answer

Production of red blood cells

Question 13

A patient is experiencing excessive water loss through the skin. Which structure is most likely malfunctioning?

Accepted Answer

Lamellar granules in the stratum granulosum

Question 14

Which of the following best explains why elderly individuals are more prone to hypothermia?

Accepted Answer

Decreased subcutaneous fat and reduced elasticity of the skin

Question 15

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

Accepted Answer

Dehydration and electrolyte imbalance

Question 16

Which of the following is true regarding the Rule of Nines in burn assessment?

Accepted Answer

It divides the body into sections, each representing 9% or multiples of 9% of total body surface area.

Question 17

Which of the following glands is responsible for producing an oily secretion that helps prevent water loss and has bactericidal properties?

Accepted Answer

Sebaceous gland

Question 18

A patient is prescribed a transdermal patch for medication delivery. Which property of the skin allows certain drugs to be absorbed in this way?

Accepted Answer

The lipid-soluble nature of the stratum corneum

Question 19

Which of the following is a correct pairing of a skin appendage and its function?

Accepted Answer

Nail matrix – responsible for nail growth

Question 20

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

Accepted Answer

Iron deficiency anemia

The Integumentary System: Structure, Function, and Clinical Aspects

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