The rule of nines: $$\text{Total Burn Area} = (\text{Number of affected regions} \times 9\%) + 1\%$$ for genitals

Question 1

Which of the following best describes the function of the dermal-epidermal junction in the skin?

Accepted Answer

It acts as a specialized area of contact providing support for the epidermis.

Question 2

A patient presents with patchy light skin areas due to acquired loss of epidermal melanocytes. What is the most likely diagnosis?

Accepted Answer

Vitiligo

Question 3

Which membrane lines the walls of the thoracic cavity and covers the lungs?

Accepted Answer

Pleura

Question 4

What is the primary function of eccrine sweat glands?

Accepted Answer

Assist in body heat regulation by producing sweat

Question 5

Which of the following is a characteristic of thick skin compared to thin skin?

Accepted Answer

Has parallel friction ridges and no hairs

Question 6

A newborn is observed to have soft, fine hair covering its body. What is this hair called?

Accepted Answer

Lanugo

Question 7

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

Accepted Answer

Production of red blood cells

Question 8

A patient presents with a pus-filled lesion on the skin. Which type of lesion is this?

Accepted Answer

Pustule

Question 9

Which equation is used to estimate the percentage of body surface area affected by burns in adults?

Accepted Answer

The rule of nines: $$	ext{Total Burn Area} = (	ext{Number of affected regions} 	imes 9\%) + 1\%$$ for genitals

Question 10

Which of the following skin cancers is characterized by papules with a central crater and rarely spreads?

Accepted Answer

Basal cell carcinoma

Question 11

A patient has a craterlike lesion on the skin. Which type of lesion is this?

Accepted Answer

Ulcer

Question 12

Which of the following is a function of the arrector pili muscle?

Accepted Answer

Causes hair to stand up straight and produces 'goose pimples'

Question 13

Which of the following is a plausible explanation for the formation of striae (stretch marks)?

Accepted Answer

Overstretching of skin causes elongated marks in the dermis

Question 14

Which of the following is true regarding the synthesis of vitamin D in the skin?

Accepted Answer

UV light causes skin cells to produce a substance that forms vitamin D, which is then transported to the liver and kidneys

Question 15

Which of the following is a characteristic of the stratum corneum?

Accepted Answer

It is composed of keratin-filled cells that eventually flake off

Question 16

Which of the following is a plausible consequence of weakened or destroyed dermal-epidermal junctions?

Accepted Answer

Formation of blisters

Question 17

Which of the following is a function of the lamellar (Pacini) corpuscle?

Accepted Answer

Detects pressure

Question 18

Which of the following is a plausible reason for the color change in the nail bed?

Accepted Answer

Change in blood flow

Question 19

Which of the following is a plausible explanation for the formation of a blackhead?

Accepted Answer

Sebum in sebaceous gland ducts darkens

Question 20

Which of the following is a plausible explanation for the development of decubitus ulcers (bedsores)?

Accepted Answer

Pressure slows down blood flow to local areas of the skin

Skin and Membranes: Structure, Function, and Clinical Aspects

Study Guide - Practice Questions