Question 1

Which of the following is NOT considered part 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 flow

Question 3

Which layer of the epidermis is responsible for the continuous production 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, which direction should the incision be made?

Accepted Answer

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' by pulling hair upright

Question 6

A person with albinism lacks which of the following in their skin?

Accepted Answer

Melanin

Question 7

Which of the following glands is responsible for producing a secretion that is 99% water and plays a major role in thermoregulation?

Accepted Answer

Merocrine (eccrine) sweat glands

Question 8

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

Accepted Answer

Blood vessels

Question 9

Which of the following best explains why fingerprints are unique to each individual?

Accepted Answer

The pattern of dermal and epidermal ridges is genetically determined and unique

Question 10

Which of the following is a function of the hypodermis?

Accepted Answer

Thermal insulation and anchoring the skin to underlying tissues

Question 11

A patient presents with a callus on their hand. Which layer of the epidermis is primarily responsible for this thickening?

Accepted Answer

Stratum granulosum

Question 12

Which of the following best describes the secretion method of sebaceous glands?

Accepted Answer

Holocrine secretion

Question 13

A person is experiencing excessive sweating in their axillary (armpit) region, which is accompanied by a noticeable odor. Which type of gland is most likely responsible?

Accepted Answer

Apocrine sweat gland

Question 14

Which of the following best explains why the palms of the hands and soles of the feet are more resistant to abrasion?

Accepted Answer

They contain a thick stratum lucidum and stratum corneum

Question 15

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

Accepted Answer

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

Question 16

A patient with a genetic mutation that prevents the production of keratin would most likely experience which of the following symptoms?

Accepted Answer

Fragile skin that is easily damaged

Question 17

Which of the following best describes the function of Langerhans cells in the epidermis?

Accepted Answer

They act as mobile macrophages involved in immune defense

Question 18

A person has a mutation that causes their sweat to be composed of 50% water and 50% oil, with a strong odor. Which gland is most likely affected?

Accepted Answer

Apocrine sweat gland

Question 19

Which of the following structures anchors the integument to underlying muscles and is important for thermal insulation?

Accepted Answer

Hypodermis

Question 20

A patient has a wound that only affects the epidermis. Which of the following structures will NOT be damaged?

Accepted Answer

Blood vessels

The Integumentary System: Structure and Function

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