Question 1

Which of the following best describes the main function of the stratum basale in the epidermis?

Accepted Answer

It is the primary site of active mitosis, producing new keratinocytes.

Question 2

A patient presents with a yellowish tint to their skin and eyes. Which underlying condition is most likely responsible for this appearance?

Accepted Answer

Liver disorder causing jaundice

Question 3

Which of the following statements about the dermis is correct?

Accepted Answer

The reticular layer contains most of the skin’s blood vessels and is responsible for cleavage lines.

Question 4

A surgeon is planning an incision on a patient’s back. According to the concept of cleavage (tension) lines, which approach will promote better healing?

Accepted Answer

Making the incision parallel to cleavage lines

Question 5

Which of the following best explains why third-degree burns are often painless?

Accepted Answer

They destroy the entire thickness of the skin, including nerve endings.

Question 6

Which pigment is produced in the skin and is responsible for protecting DNA from UV radiation?

Accepted Answer

Melanin

Question 7

A patient is diagnosed with squamous cell carcinoma. Which layer and cell type are primarily involved in this cancer?

Accepted Answer

Stratum spinosum; keratinocytes

Question 8

Which of the following glands is responsible for producing an oily secretion that helps soften hair and skin, and what is the mode of secretion?

Accepted Answer

Sebaceous gland; holocrine secretion

Question 9

A 25-year-old woman develops coarse, terminal hair on her face and chest. Which condition is most likely responsible for this change?

Accepted Answer

Hirsutism due to increased androgen production

Question 10

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

Accepted Answer

It retards bacterial multiplication by maintaining a low pH.

Question 11

A patient presents with a large, irregularly pigmented lesion that is asymmetrical, has an uneven border, and is larger than 6 mm. Which type of skin cancer is most likely?

Accepted Answer

Melanoma

Question 12

Which of the following best describes the secretion and function of eccrine sweat glands?

Accepted Answer

They secrete a watery solution directly onto the skin surface for thermoregulation.

Question 13

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

Accepted Answer

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

Question 14

A patient with severe burns is at immediate risk for which of the following complications?

Accepted Answer

Dehydration and electrolyte imbalance

Question 15

Which of the following best explains why elderly individuals are more prone to skin infections and cancer?

Accepted Answer

Decreased numbers of melanocytes and dendritic cells

Question 16

Which of the following is a correct description of the function of lamellar granules in the stratum granulosum?

Accepted Answer

They release a water-resistant glycolipid that slows water loss from the skin.

Question 17

A patient is experiencing excessive sweating on their palms and soles during stressful situations. Which type of gland is primarily responsible for this response?

Accepted Answer

Eccrine (merocrine) sweat gland

Question 18

Which of the following best describes the main structural difference between vellus and terminal hair?

Accepted Answer

Terminal hair is longer, coarser, and more heavily pigmented than vellus hair.

Question 19

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

Accepted Answer

Synthesis of vitamin D for calcium absorption

Question 20

A patient presents with a spoon-shaped concavity of the nails (koilonychia). Which underlying deficiency is most likely responsible?

Accepted Answer

Iron deficiency

The Integumentary System: Structure, Function, and Clinical Aspects

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