Question 1

Which layer of the skin is primarily responsible for providing insulation and energy storage?

Accepted Answer

Hypodermis (subcutaneous layer)

Question 2

A patient presents with a deep cut that bleeds profusely but does not damage underlying muscle. Which skin layer has most likely been penetrated?

Accepted Answer

Dermis

Question 3

Which of the following best describes the function of the structure labeled as the 'dermal papillae' in the skin diagram?

Accepted Answer

Increasing surface area for nutrient exchange between dermis and epidermis

Question 4

Which of the following equations best represents the relationship between the rate of heat loss ($Q$) through the skin, the surface area ($A$), the temperature difference ($\Delta T$), and the thermal conductivity ($k$) of the skin?

Accepted Answer

$Q = \frac{kA\Delta T}{d}$

Question 5

A burn patient loses the entire epidermis and part of the dermis. Which of the following complications is most likely to occur?

Accepted Answer

Increased risk of dehydration and infection

Question 6

Which of the following cells is primarily responsible for detecting light touch in the skin?

Accepted Answer

Merkel cell

Question 7

If the stratum corneum is damaged, which of the following is the most immediate physiological consequence?

Accepted Answer

Increased water loss through the skin

Question 8

Which of the following best explains why the skin appears red and swollen after an injury?

Accepted Answer

Vasodilation and increased permeability of dermal blood vessels

Question 9

A histological section shows a thickened stratum corneum and increased keratinization. This is most likely a response to which of the following?

Accepted Answer

Chronic friction or pressure

Question 10

Which of the following best describes the arrangement of collagen fibers in the reticular layer of the dermis?

Accepted Answer

Randomly oriented to provide multidirectional strength

Question 11

A patient with a genetic defect in elastin synthesis would most likely exhibit which of the following skin symptoms?

Accepted Answer

Skin that is easily stretched and does not return to its original shape

Question 12

Which of the following best describes the function of the hypodermis?

Accepted Answer

Provides insulation and stores energy

Question 13

Which of the following is the correct order of the layers of the epidermis from deepest to most superficial?

Accepted Answer

Stratum basale, stratum spinosum, stratum granulosum, stratum corneum

Question 14

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

Accepted Answer

Thinning of the dermis and loss of elastic fibers

Question 15

Which of the following best describes the role of Langerhans cells in the epidermis?

Accepted Answer

Immune surveillance and antigen presentation

Question 16

A patient with a mutation that prevents the formation of tight junctions in the epidermis would most likely experience which of the following?

Accepted Answer

Increased water loss and susceptibility to infection

Question 17

Which of the following best explains the appearance of blisters after a burn?

Accepted Answer

Separation of the epidermis from the dermis with accumulation of fluid

Question 18

Which of the following equations best represents the calculation of body surface area (BSA) using the 'Rule of Nines' for burn assessment?

Accepted Answer

$BSA = \frac{A_{burned}}{A_{total}} 	imes 100\%$

Question 19

Which of the following best describes the function of sweat glands in thermoregulation?

Accepted Answer

They secrete water and electrolytes that evaporate to cool the body

Guided Study: Layers and Structures of the Skin

Study Guide - Practice Questions

Study Guide - Flashcards