Question 1

Which of the following best describes the primary function of melanin in the integumentary system?

Accepted Answer

To protect underlying tissues from ultraviolet (UV) radiation

Question 2

A patient presents with a bluish tint to their skin and mucous membranes. Which of the following best explains this condition?

Accepted Answer

Reduced blood flow or oxygenation, known as cyanosis

Question 3

Which layer of the epidermis is responsible for the formation of new keratinocytes and is attached to the basal lamina?

Accepted Answer

Stratum basale

Question 4

A surgeon is planning an incision along a line of cleavage in the skin. What is the main advantage of making an incision parallel to these lines?

Accepted Answer

It allows the wound to remain closed and heal with minimal scarring

Question 5

Which of the following best explains why thick skin is found on the palms of the hands and soles of the feet?

Accepted Answer

It has an additional layer, the stratum lucidum, for increased abrasion resistance

Question 6

A child with a genetic lack of functioning tyrosinase enzyme presents with white hair, pale skin, and pink eyes. What is the most likely diagnosis?

Accepted Answer

Albinism

Question 7

Which of the following glands is primarily responsible for thermoregulation through the secretion of a watery, electrolyte-rich fluid?

Accepted Answer

Merocrine (eccrine) sweat glands

Question 8

A patient suffers a burn that destroys the epidermis, dermis, and underlying subcutaneous tissue. According to the classification of burns, what degree is this burn?

Accepted Answer

Third-degree

Question 9

Which of the following is a function of the hypodermis (subcutaneous layer)?

Accepted Answer

Thermal insulation and energy storage

Question 10

A 45-year-old male notices a new, irregularly shaped, multicolored mole on his scalp that is larger than 6 mm in diameter. Which type of skin cancer is most likely, and what rule is used to assess it?

Accepted Answer

Malignant melanoma; ABCD rule

Question 11

Which of the following best describes the process of keratinization in the epidermis?

Accepted Answer

Formation of a dead, protective cell layer filled with keratin

Question 12

A patient with liver disease develops a yellowish hue to their skin and eyes. What is the underlying cause of this condition?

Accepted Answer

Accumulation of bilirubin in the blood

Question 13

Which of the following is TRUE regarding the structure and function of hair?

Accepted Answer

The hair bulb contains the matrix, which is the site of hair growth

Question 14

A patient presents with pale, ashen skin after a traumatic accident. Which physiological response is most likely responsible for this change in skin color?

Accepted Answer

Decreased blood flow due to circulatory shock

Question 15

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

Accepted Answer

Thinning of the epidermis and dermis, and decreased glandular activity

Question 16

During the repair of a deep skin wound, which of the following processes occurs first?

Accepted Answer

Inflammatory response

Question 17

Which of the following is a correct match between a skin pigment and its source or function?

Accepted Answer

Hemoglobin: red pigment from oxygenated blood

Question 18

A patient with a second-degree burn will experience which of the following?

Accepted Answer

Blistering involving the epidermis and part of the dermis

Question 19

Which of the following best describes the role of Vitamin D synthesis in the skin?

Accepted Answer

It is synthesized in the epidermis upon UV exposure and is essential for calcium absorption

Question 20

A woman develops excessive, coarse, dark hair growth on her face and chest. Which term best describes this condition?

Accepted Answer

Hirsutism

Chapter 5: The Integumentary System – Structure and Function

Guida di studio - Domande di pratica

Study guide - Flashcard