Question 1

Which layer of the epidermis is primarily responsible for the generation of new keratinocytes?

Accepted Answer

Stratum basale

Question 2

A patient presents with a deep cut that penetrates through the epidermis and into the dermis. Which of the following structures is most likely to be damaged?

Accepted Answer

Sebaceous gland

Question 3

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

Accepted Answer

Contracts to cause hair to stand upright, producing 'goosebumps'

Question 4

Which structure is responsible for the waterproof barrier of the skin?

Accepted Answer

Lamellar granules in the stratum granulosum

Question 5

A burn that destroys the epidermis and damages the dermis will most likely affect which of the following functions?

Accepted Answer

Sensation of touch and pain

Question 6

Which of the following is the correct order of the layers of the epidermis from deepest to most superficial in thick skin?

Accepted Answer

Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

Question 7

Which of the following best describes the function of the sebaceous gland?

Accepted Answer

Secretes sebum to lubricate and waterproof the skin and hair

Question 8

A patient with a genetic defect in keratin production would most likely have abnormalities in which structure?

Accepted Answer

Hair shaft

Question 9

Which of the following structures is found in the hypodermis and is primarily responsible for energy storage?

Accepted Answer

Adipose tissue

Question 10

Which of the following best explains why the nail appears pink in healthy individuals?

Accepted Answer

Rich capillary bed in the underlying dermis

Question 11

A patient is unable to sweat properly and is at risk for overheating. Which structure is most likely malfunctioning?

Accepted Answer

Eccrine sweat gland

Question 12

Which of the following is the main function of the Pacinian corpuscle found in the skin?

Accepted Answer

Detects deep pressure and vibration

Question 13

Which of the following best describes the role of the hair matrix?

Accepted Answer

Is the site of active cell division producing the hair

Question 14

A person with damage to the stratum basale would most likely experience which of the following?

Accepted Answer

Impaired regeneration of the epidermis

Question 15

Which of the following is true regarding the cuticle of the hair?

Accepted Answer

It is the outermost layer and provides protection to the hair

Question 16

Which of the following best describes the function of the hyponychium?

Accepted Answer

Secures the free edge of the nail at the fingertip

Question 17

Which of the following is a correct statement about the stratum lucidum?

Accepted Answer

It is found only in thick skin, such as the palms and soles

Question 18

A patient with a blocked sebaceous gland is most likely to develop which of the following conditions?

Accepted Answer

A boil or acne

Question 19

Which of the following best describes the function of lamellar granules in the epidermis?

Accepted Answer

Release lipids that help prevent water loss

Question 20

Which of the following structures is responsible for detecting light touch in the skin?

Accepted Answer

Merkel cell

The Integumentary System: Structure and Function

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