Question 1

Which of the following best describes the primary function of melanocytes in the epidermis?

Accepted Answer

They synthesize melanin to protect DNA from UV radiation.

Question 2

A patient presents with bluish discoloration of the skin (cyanosis). Which physiological condition is most likely responsible?

Accepted Answer

Low oxygenation of hemoglobin

Question 3

Which layer of the epidermis is responsible for the continuous regeneration of skin cells?

Accepted Answer

Stratum basale

Question 4

A burn patient is evaluated using the rule of nines. If both legs (anterior and posterior) are burned, what percentage of the body surface area is affected?

Accepted Answer

$$36\%$$

Question 5

Which gland is primarily responsible for thermoregulation through sweat production?

Accepted Answer

Eccrine sweat gland

Question 6

A patient with a yellowish tint to their skin and eyes is most likely suffering from which underlying condition?

Accepted Answer

Liver disorder

Question 7

Which of the following is a function of the papillary layer of the dermis?

Accepted Answer

Enhances gripping ability and contributes to fingerprints

Question 8

Which type of skin cancer is most likely to metastasize rapidly and is considered the most dangerous?

Accepted Answer

Melanoma

Question 9

A patient presents with thickened, yellow nails. Which of the following is the most likely cause?

Accepted Answer

Fungal infection

Question 10

Which of the following best explains why the stratum corneum is important for the skin's protective function?

Accepted Answer

It is composed of 20–30 layers of dead, keratinized cells that form a barrier.

Question 11

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

Accepted Answer

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

Question 12

Which of the following is a function of sebum produced by sebaceous glands?

Accepted Answer

Bactericidal action and softening of hair and skin

Question 13

A patient with a large blister after a burn has separation between which two layers?

Accepted Answer

Epidermis and dermis

Question 14

Which of the following best describes the main difference between eccrine and apocrine sweat glands?

Accepted Answer

Eccrine glands are involved in thermoregulation, while apocrine glands become active at puberty and secrete a viscous fluid.

Question 15

A patient with uncontrolled diabetes develops horizontal lines across their nails. What is the clinical term for this finding?

Accepted Answer

Beau’s lines

Question 16

Which of the following is NOT a function of the skin?

Accepted Answer

Production of red blood cells

Question 17

A patient with a third-degree burn on the face, hands, and feet is considered to have a critical burn. Which of the following is the most immediate threat to life?

Accepted Answer

Dehydration and electrolyte imbalance

Question 18

Which pigment is most responsible for the yellow to orange coloration of the skin, especially in the palms and soles?

Accepted Answer

Carotene

Question 19

Which of the following best explains why excessive sun exposure increases the risk of skin cancer?

Accepted Answer

UV light causes DNA alterations in skin cells.

Question 20

A patient presents with silvery white scars on the abdomen after pregnancy. What is the most likely cause?

Accepted Answer

Dermal tears resulting in striae

Lecture 6 - The Integumentary System: Structure, Function, and Clinical Aspects

Guida di studio - Domande di pratica

Study guide - Flashcard