Question 1

Which of the following best describes the main function of the stratum germinativum (basale) in the epidermis?

Accepted Answer

It contains stem cells responsible for the regeneration of new epidermal cells.

Question 2

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

Accepted Answer

Jaundice; accumulation of bile pigments due to liver dysfunction

Question 3

Which of the following statements about the dermis is correct?

Accepted Answer

It contains two layers: the papillary layer and the reticular layer.

Question 4

Which gland is responsible for producing sensible perspiration, and what is one of its main functions?

Accepted Answer

Merocrine (eccrine) sweat gland; regulates body temperature by cooling the skin

Question 5

A person who spends little time in sunlight may be at risk for which condition, and why?

Accepted Answer

Rickets, due to insufficient production of vitamin D3 in the skin

Question 6

Which of the following best explains why bed sores (decubitus ulcers) develop in bedridden patients?

Accepted Answer

Continuous pressure reduces blood flow to the skin, causing cell death and increased risk of infection.

Question 7

Which pigment is responsible for the orange/yellow coloration of the skin and is converted to vitamin A?

Accepted Answer

Carotene

Question 8

A mutation prevents the production of the amino acid tyrosine in a patient. What is the most likely outcome for their skin?

Accepted Answer

Development of albinism due to lack of melanin

Question 9

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 germinativum, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

Question 10

Which structure is responsible for making hair stand on end during cold or emotional states?

Accepted Answer

Arrector pili muscle

Question 11

A patient has a wound that is healing with a thick, shiny scar that extends above the surface of the skin. What is this type of scar called?

Accepted Answer

Keloid

Question 12

Which of the following best describes the main difference between merocrine and apocrine sweat glands?

Accepted Answer

Merocrine glands are more numerous and found all over the body, while apocrine glands are limited to the armpits and groin.

Question 13

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

Accepted Answer

Production of red blood cells

Question 14

Which cells in the epidermis are primarily responsible for immune defense against microorganisms and superficial skin cancers?

Accepted Answer

Langerhans cells

Question 15

A person with a genetic defect preventing the formation of collagen in the dermis would most likely experience which of the following?

Accepted Answer

Weaker and thinner skin prone to injury

Question 16

Which of the following best explains why the subcutaneous layer (hypodermis) is a common site for injections?

Accepted Answer

It has a rich blood supply and loose connective tissue, allowing for quick absorption of substances.

Question 17

Which of the following is a correct statement about the repair of skin after injury?

Accepted Answer

A scab forms to protect the wound, and fibroblasts produce scar tissue beneath it.

Question 18

Which of the following best describes the function of ceruminous glands?

Accepted Answer

They secrete wax (cerumen) in the ear canal for protection.

Question 19

Which of the following is true regarding the aging of the integumentary system?

Accepted Answer

Collagen and elastin decrease, leading to thinner, weaker, and more wrinkled skin.

Question 20

Which of the following best explains why a person with leprosy is at increased risk for burns and injuries to their hands?

Accepted Answer

Leprosy destroys nerve endings, reducing the ability to sense extreme temperatures.

Integumentary System: Structure, Function, and Clinical Aspects

Study Guide - Practice Questions