Question 1

Which of the following is NOT considered an accessory structure of the integumentary system?

Accepted Answer

Epidermis

Question 2

A patient presents with a deep laceration on the forearm. To minimize scarring, a surgeon should make the incision:

Accepted Answer

Parallel to the lines of cleavage

Question 3

Which layer of the epidermis is responsible for the formation of fingerprints?

Accepted Answer

Stratum basale (germinativum)

Question 4

Which cell type in the epidermis is primarily responsible for immune defense?

Accepted Answer

Langerhans cells

Question 5

A person with a blocked sebaceous gland is most likely to develop which condition?

Accepted Answer

Acne

Question 6

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

Accepted Answer

Contracts to produce goose bumps

Question 7

Which layer of the skin contains the majority of blood vessels, lymph vessels, and nerve fibers?

Accepted Answer

Reticular layer of the dermis

Question 8

Which type of gland is responsible for producing an odorous secretion that may contain pheromones and is found in high concentration in the armpit and nipple regions?

Accepted Answer

Apocrine gland

Question 9

Which of the following is TRUE regarding thick skin?

Accepted Answer

It contains five layers of cells.

Question 10

A decrease in which cell type is most likely to reduce the skin’s ability to fight infection as a person ages?

Accepted Answer

Langerhans cells

Question 11

Which of the following best explains why elderly individuals are at increased risk for overheating?

Accepted Answer

Decreased blood supply to the dermis

Question 12

Which formula best represents the relationship between sweat production and body temperature regulation?

Accepted Answer

$$Q = m c \Delta T$$

Question 13

A patient presents with pale skin and reduced ability to dissipate heat. Which layer is most likely affected?

Accepted Answer

Reticular layer of the dermis

Question 14

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

Accepted Answer

Production of red blood cells

Question 15

Which cell type produces the pigment responsible for skin color?

Accepted Answer

Melanocytes

Question 16

Which of the following best describes the difference between holocrine and merocrine secretion?

Accepted Answer

Holocrine secretion involves the entire cell disintegrating to release its product.

Question 17

A patient with a genetic mutation causing reduced keratin production would most likely have which symptom?

Accepted Answer

Fragile skin prone to injury

Question 18

Which of the following structures is NOT found in the subcutaneous (hypodermis) layer?

Accepted Answer

Epidermal stem cells

Question 19

Which of the following is TRUE regarding the distribution of hair follicles?

Accepted Answer

Hair follicles are absent on the lips and portions of genitalia.

Question 20

Which of the following best explains the formation of stretch marks during pregnancy?

Accepted Answer

Breakage of reticular fibers in the dermis

The Integumentary System: Structure and Function

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