Question 1

Which of the following is NOT considered a component of the integumentary system?

Accepted Answer

Lymph nodes

Question 2

A patient presents with a bluish hue to their skin (cyanosis). Which of the following is the most likely physiological cause?

Accepted Answer

Reduction in dermal blood supply

Question 3

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

Accepted Answer

Stratum basale

Question 4

A surgeon wants to minimize scarring during a procedure. According to the structure of the dermis, what should they do?

Accepted Answer

Cut parallel to the lines of cleavage

Question 5

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

Accepted Answer

Contracts to produce 'goose bumps'

Question 6

Which gland is responsible for producing a waxy lipid substance that lubricates the hair and epidermis?

Accepted Answer

Sebaceous gland

Question 7

Which layer of the skin is primarily responsible for thermal insulation and is the site for subcutaneous injections?

Accepted Answer

Hypodermis

Question 8

A person with albinism lacks which pigment in their skin?

Accepted Answer

Melanin

Question 9

Which of the following statements about the stratum lucidum is TRUE?

Accepted Answer

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

Question 10

If a person leaves a fingerprint on a glass surface, which anatomical feature is responsible for this unique pattern?

Accepted Answer

Epidermal ridges

Question 11

Which of the following is a function of the skin that directly contributes to homeostasis?

Accepted Answer

Regulation of body temperature

Question 12

Which type of sweat gland is most abundant and produces sweat that is 99% water?

Accepted Answer

Merocrine (eccrine) gland

Question 13

A patient has a callus on their hand from repeated friction. Which layer of the epidermis is most responsible for this adaptation?

Accepted Answer

Stratum granulosum

Question 14

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

Accepted Answer

Langerhans cells

Question 15

Which of the following best describes the structure of a hair?

Accepted Answer

A flexible strand of dead keratinized cells

Question 16

If the rate of hair growth is $$0.33\ \mathrm{mm/day}$$, how much will a hair grow in 3 weeks?

Accepted Answer

$$6.93\ \mathrm{mm}$$

Question 17

Which of the following is TRUE regarding the hypodermis?

Accepted Answer

It anchors the integument to underlying muscles

Question 18

Which gland is a modified sweat gland that produces ear wax?

Accepted Answer

Ceruminous gland

Question 19

Which structure is a modification of the epidermis and provides protection for the tips of fingers and toes?

Accepted Answer

Nail

Question 20

A person with a genetic mutation that prevents the uptake of melanin by keratinocytes would most likely exhibit which condition?

Accepted Answer

Albinism

The Integumentary System: Structure and Function

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