Question 1

Which of the following best describes the tissue type that makes up the epidermis?

Accepted Answer

Keratinized stratified squamous epithelium

Question 2

Which layer of the skin is primarily responsible for its vascularization?

Accepted Answer

Dermis

Question 3

A patient presents with bluish discoloration of the skin and mucous membranes. Which of the following is the most likely cause?

Accepted Answer

Cyanosis due to low oxygenation of hemoglobin

Question 4

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

Accepted Answer

Stratum lucidum

Question 5

Which cell type in the epidermis produces the pigment that acts as a natural sunscreen?

Accepted Answer

Melanocytes

Question 6

Fingerprints are impressions left on a surface by which of the following?

Accepted Answer

Friction ridges

Question 7

Which pigment is most responsible for the skin color of light-skinned people?

Accepted Answer

Hemoglobin

Question 8

Which of the following best describes the connective tissue found in the papillary layer of the dermis?

Accepted Answer

Areolar connective tissue

Question 9

Which part of the nail is responsible for nail growth?

Accepted Answer

Nail matrix

Question 10

Which of the following is a function of eccrine sweat glands?

Accepted Answer

Involved in thermoregulation by secreting a hypotonic filtrate of blood

Question 11

Which of the following best explains why contraction of the arrector pili muscle causes goosebumps?

Accepted Answer

It pulls the hair follicle upright, trapping air and providing insulation

Question 12

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

Accepted Answer

Production of red blood cells

Question 13

Which of the following cutaneous receptors is responsible for detecting deep pressure and vibration?

Accepted Answer

Lamellar (Pacinian) corpuscles

Question 14

Which equation best represents the relationship between skin surface area ($$A$$), sweat rate ($$Q$$), and heat loss ($$H) $$during thermoregulation?

Accepted Answer

$$H = Q 	imes A$$

Question 15

A patient presents with yellowing of the skin and sclera. Which of the following is the most likely cause?

Accepted Answer

Jaundice due to increased bilirubin

Question 16

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

Accepted Answer

Eccrine glands are involved in thermoregulation, apocrine glands are associated with scent

Question 17

Which of the following is a chemical barrier provided by the skin?

Accepted Answer

Acid mantle

Question 18

Which connective tissue type is found in the reticular layer of the dermis?

Accepted Answer

Dense irregular connective tissue

Question 19

Which of the following best explains the role of the skin in calcium absorption?

Accepted Answer

The skin produces vitamin D, which is necessary for calcium absorption in the digestive tract

Question 20

Which of the following best describes the function of dendritic (Langerhans) cells in the epidermis?

Accepted Answer

They act as immune sentinels, protecting against pathogens

Integumentary System: Structure and Function of the Skin, Hair, and Nails

Study Guide - Practice Questions