Question 1

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

Accepted Answer

Synthesis of insulin

Question 2

The epidermis is primarily composed of which type of tissue?

Accepted Answer

Keratinized stratified squamous epithelium

Question 3

Which cell type in the epidermis is responsible for producing the pigment that protects against UV radiation?

Accepted Answer

Melanocytes

Question 4

A patient presents with a genetic inability to produce tyrosinase. Which condition is most likely?

Accepted Answer

Albinism

Question 5

Which layer of the skin contains blood vessels, nerves, and is responsible for the majority of the skin’s strength and elasticity?

Accepted Answer

Dermis

Question 6

Incisions made parallel to cleavage lines in the skin tend to heal more quickly because:

Accepted Answer

They follow the orientation of collagen fibers

Question 7

Which of the following best describes the hypodermis?

Accepted Answer

It is primarily composed of adipose tissue and provides insulation

Question 8

A tattoo is injected into the skin. Which layer must the ink reach to ensure permanence?

Accepted Answer

Dermis

Question 9

Which type of sweat gland is most active during emotional stress and is found in the axillary and genital regions?

Accepted Answer

Apocrine gland

Question 10

Which protein is responsible for the toughness and water-resistance of the epidermis?

Accepted Answer

Keratin

Question 11

A patient has a wound that exposes the subcutaneous layer. Which structures are most likely to be damaged?

Accepted Answer

Adipose tissue and major blood vessels

Question 12

Which of the following best explains why fingertips have thicker skin than the rest of the body?

Accepted Answer

Fingertips experience more friction, leading to more epidermal layers

Question 13

Which of the following is TRUE regarding melanin?

Accepted Answer

Melanin protects the cell nucleus from UV damage

Question 14

Which formula best represents the relationship between heat loss ($$Q) $$through the skin and the surface area ($$A) $$exposed, assuming all other factors are constant?

Accepted Answer

$$Q = kA(T_{skin} - T_{env})$$

Question 15

Which structure is responsible for producing sebum to lubricate the skin and hair?

Accepted Answer

Sebaceous gland

Question 16

A patient with a burn that destroys the entire epidermis and part of the dermis will likely experience which of the following complications?

Accepted Answer

Increased risk of infection and dehydration

Question 17

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

Accepted Answer

Stratum basale

Question 18

Which of the following best describes the role of dermal papillae?

Accepted Answer

They increase surface area for nutrient/gas exchange between dermis and epidermis

Question 19

Which of the following is a correct sequence of layers from superficial to deep in the skin?

Accepted Answer

Epidermis, dermis, hypodermis

Question 20

A person with abundant eumelanin in their hair and skin will most likely have which physical characteristics?

Accepted Answer

Black hair and brown skin

Chapter 5: The Integumentary System – Structure and Function of the Skin

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