Question 1

Which layer of the skin is primarily responsible for thermoregulation due to its high vascularity and presence of sweat glands?

Accepted Answer

Dermis

Question 2

A patient presents with a yellowish discoloration of the skin and sclera. Which pigment is most likely responsible for this condition, and what is the condition called?

Accepted Answer

Bilirubin; Jaundice

Question 3

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

Accepted Answer

Keratinization and water-proofing of the skin

Question 4

A surgeon plans an incision on the trunk. To minimize scarring, the incision should be made parallel to which anatomical feature?

Accepted Answer

Cleavage lines

Question 5

Which type of gland is responsible for producing a watery secretion that aids in thermoregulation and is distributed over most of the body?

Accepted Answer

Eccrine (merocrine) sweat gland

Question 6

A genetic mutation prevents the production of melanin in the skin. Which condition will most likely result?

Accepted Answer

Albinism

Question 7

Which of the following best explains why third-degree burns are life-threatening?

Accepted Answer

They destroy the entire thickness of the skin, leading to fluid loss and infection risk.

Question 8

Which structure is responsible for detecting deep pressure and vibration in the skin?

Accepted Answer

Lamellar (Pacinian) corpuscle

Question 9

A patient with a masculinizing ovarian tumor develops excessive hair growth in areas typically associated with males. What is this condition called?

Accepted Answer

Hirsutism

Question 10

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

Accepted Answer

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

Question 11

Which cell type in the epidermis is primarily responsible for immune defense against pathogens?

Accepted Answer

Dendritic (Langerhans) cell

Question 12

A patient presents with a bluish tint to their skin, especially noticeable in the lips and nail beds. What is the most likely cause?

Accepted Answer

Decreased oxygenation of hemoglobin (Cyanosis)

Question 13

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

Accepted Answer

Eccrine glands are involved in thermoregulation and are widely distributed, while apocrine glands are localized and become active at puberty.

Question 14

Which of the following best explains why the stratum corneum is an effective barrier against water loss?

Accepted Answer

It is composed of multiple layers of dead, keratinized cells and extracellular glycolipids.

Question 15

A patient has a deep bruise (hematoma) on their arm. Which layer of the skin is most likely affected?

Accepted Answer

Dermis

Question 16

Which of the following is a function of the hypodermis?

Accepted Answer

Insulation and energy storage

Question 17

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

Accepted Answer

Malignant melanoma

Question 18

Which protein, found in the stratum granulosum, binds keratin filaments together to strengthen the skin barrier?

Accepted Answer

Filaggrin

Question 19

A newborn is covered with fine, unpigmented hair. What is this type of hair called?

Accepted Answer

Lanugo

Question 20

Which of the following best describes the main function of sebaceous glands?

Accepted Answer

Secretion of sebum to lubricate and waterproof the skin and hair

The Integumentary System: Structure and Function of Skin and Its Appendages

Guida di studio - Domande di pratica

Study guide - Flashcard