Question 1

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

Accepted Answer

Regulation of blood glucose levels

Question 2

Which layer of the epidermis is responsible for the formation of fingerprints?

Accepted Answer

Stratum basale

Question 3

A splinter that penetrates to the third layer of the epidermis of the palm is lodged in which layer?

Accepted Answer

Stratum granulosum

Question 4

Which pigment is primarily responsible for the brown, yellow-brown, or black coloration of skin?

Accepted Answer

Melanin

Question 5

Why does the skin of a light-skinned person appear red during exercise in hot weather?

Accepted Answer

Increased blood flow to the dermis

Question 6

Which type of burn typically requires skin grafting and why?

Accepted Answer

Third-degree burn, because it destroys the epidermis and dermis and cannot repair itself

Question 7

A 32-year-old woman is admitted with third-degree burns on her entire right leg, entire right arm, and the back of her trunk. Using the rule of nines for adults, estimate the percentage of her body surface area affected.

Accepted Answer

$9\% + 18\% + 18\% = 45\%$

Question 8

Which of the following best describes the papillary layer of the dermis?

Accepted Answer

Composed of areolar connective tissue and contains capillaries, lymphatic vessels, and sensory neurons

Question 9

Which accessory structure of the skin is responsible for producing sebum?

Accepted Answer

Sebaceous gland

Question 10

Which of the following statements about hair growth is correct?

Accepted Answer

Hair grows in cycles, with an active phase lasting 2-5 years and a resting phase where the hair is shed

Question 11

Which type of exocrine gland in the skin is most important for thermoregulation?

Accepted Answer

Eccrine (merocrine) sweat gland

Question 12

What is the primary function of the cutaneous plexus in the skin?

Accepted Answer

Provides blood supply to the dermis and epidermis

Question 13

Which hormone stimulates cell growth and division in the epidermis, promoting wound repair?

Accepted Answer

Growth hormone (GH)

Question 14

Why are older adults more susceptible to heat-related illness?

Accepted Answer

Decreased activity of sweat glands reduces their ability to lose heat

Question 15

Which phase of skin repair involves the formation of granulation tissue?

Accepted Answer

Migration phase

Question 16

A deficiency in vitamin D$_3$ production due to lack of sunlight exposure can lead to which condition in children?

Accepted Answer

Rickets

Question 17

Which of the following best explains why basal cell carcinoma is considered less dangerous than malignant melanoma?

Accepted Answer

Basal cell carcinoma rarely metastasizes, while malignant melanoma spreads rapidly through the lymphatic system

Question 18

Which structure is NOT considered an accessory structure of the integumentary system?

Accepted Answer

Stratum corneum

Question 19

Which layer of the epidermis contains actively dividing stem cells and Merkel cells?

Accepted Answer

Stratum basale

The Integumentary System: Structure, Function, and Clinical Aspects

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