Question 1

Which layer of the epidermis is responsible for actively dividing stem cells and is also known as the stratum germinativum?

Accepted Answer

Stratum basale

Question 2

A patient presents with silvery white scars on the abdomen after rapid weight gain. What is the most likely cause of these marks?

Accepted Answer

Dermal tears resulting in striae

Question 3

Which cell type in the epidermis functions as a sensory receptor for touch and is located at the epidermal-dermal junction?

Accepted Answer

Merkel cell (tactile epithelial cell)

Question 4

A burn patient has damage to the entire thickness of the skin, with the area appearing gray-white and painless. What type of burn is this?

Accepted Answer

Third-degree burn

Question 5

Which pigment is produced by melanocytes and protects keratinocyte nuclei from UV damage?

Accepted Answer

Melanin

Question 6

A patient taking antibiotics develops a skin rash after sun exposure. What is the most likely explanation for this reaction?

Accepted Answer

Photosensitivity due to drug interaction

Question 7

Which layer of the epidermis is only found in thick skin, such as the palms and soles?

Accepted Answer

Stratum lucidum

Question 8

What is the primary function of lamellar granules in the stratum granulosum?

Accepted Answer

Provide water-resistant glycolipid to slow water loss

Question 9

Which type of sweat gland is most numerous and plays a key role in thermoregulation?

Accepted Answer

Eccrine (merocrine) sweat gland

Question 10

A patient presents with yellow-tinged nails and thickening. Which condition is most likely indicated?

Accepted Answer

Fungal infection

Question 11

Which of the following is a function of the skin’s acid mantle?

Accepted Answer

Retards bacterial multiplication

Question 12

A patient with low oxygenation of hemoglobin presents with bluish skin. What is this condition called?

Accepted Answer

Cyanosis

Question 13

Which structure in the dermis is responsible for deep pressure sensation?

Accepted Answer

Lamellar (Pacinian) corpuscle

Question 14

Which equation best represents the calculation of total body surface area affected by burns using the Rule of Nines?

Accepted Answer

$$Total\ Surface\ Area = \sum_{regions} (Region\ Percentage)$$

Question 15

Which layer of the dermis contains dermal papillae and is responsible for fingerprints?

Accepted Answer

Papillary dermis

Question 16

Which of the following is a metabolic function of the skin?

Accepted Answer

Synthesis of vitamin D for calcium absorption

Question 17

A patient with uncontrolled diabetes presents with horizontal lines across the nails. What is the name of this clinical sign?

Accepted Answer

Beau’s lines

Question 18

Which of the following substances can penetrate the skin’s physical barrier most easily?

Accepted Answer

Lipid-soluble substances

Question 19

Which cell type in the epidermis is a key activator of the immune system by ingesting foreign substances?

Accepted Answer

Dendritic (Langerhans) cell

Question 20

Which of the following is a correct statement about hair growth cycles?

Accepted Answer

Scalp follicles have an average active phase of 4 years

Chapter 5: The Integumentary System – Structure and Function

스터디 가이드 - 연습 문제