$$\text{Heat loss} \propto \text{Blood flow to skin}$$

Question 1

Which of the following is NOT a function of the integumentary system?

Accepted Answer

Production of hormones for metabolism

Question 2

A patient presents with a paper cut that does not bleed but is painful. Which layer(s) of the skin are most likely affected?

Accepted Answer

Stratum corneum and possibly stratum basale

Question 3

Which cell type in the epidermis is primarily responsible for producing the pigment that protects against UV radiation?

Accepted Answer

Melanocytes

Question 4

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

Accepted Answer

Loose areolar connective tissue

Question 5

A person with cyanosis will have skin that appears bluish. What is the underlying cause of this color change?

Accepted Answer

Deoxygenated hemoglobin in blood vessels

Question 6

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

Accepted Answer

Pacinian corpuscles

Question 7

Which equation best represents the relationship between heat loss through the skin and blood flow?

Accepted Answer

$$	ext{Heat loss} \propto 	ext{Blood flow to skin}$$

Question 8

Which of the following best explains why thick skin is found on the palms and soles?

Accepted Answer

It has a thicker stratum corneum for protection against abrasion

Question 9

Which of the following is TRUE regarding the hypodermis?

Accepted Answer

It is composed mainly of adipose tissue and provides insulation

Question 10

A patient with albinism lacks pigmentation in their skin, hair, and eyes. Which of the following best explains the cause?

Accepted Answer

Genetic defect resulting in lack of melanin synthesis

Question 11

Which of the following glands is responsible for producing sebum, and what is its main function?

Accepted Answer

Sebaceous gland; produces oil to lubricate and waterproof skin

Question 12

Which of the following best describes the process of wound healing in the epidermis?

Accepted Answer

Epithelial cells migrate towards each other until contact inhibition occurs

Question 13

Which of the following is a characteristic of a third-degree burn?

Accepted Answer

Epidermis and entire dermis are destroyed, often resulting in painless injury

Question 14

Which of the following best explains why a person who has lost significant blood may feel cold and clammy?

Accepted Answer

Reduced blood flow to the skin decreases heat delivery, causing coldness and clamminess

Question 15

Which of the following is TRUE regarding the difference between a freckle and a nevus?

Accepted Answer

A freckle is a localized increase in melanin, while a nevus is a benign tumor of melanocytes

Question 16

Which of the following equations best represents the relationship between vitamin D synthesis and UV exposure?

Accepted Answer

$$	ext{Vitamin D synthesis} \propto 	ext{UV exposure}$$

Question 17

Which of the following best describes the function of Langerhans cells in the skin?

Accepted Answer

They act as immune cells, detecting pathogens

Question 18

Which of the following is a property provided to the skin by dense irregular connective tissue in the reticular region of the dermis?

Accepted Answer

Flexibility and resistance to multidirectional forces

Question 19

Which of the following best explains why nails appear pink?

Accepted Answer

Underlying blood vessels in the nail bed

Question 20

Which of the following is a similarity between hair and nails?

Accepted Answer

Both are composed of keratin

Integumentary System Study Guide – Step-by-Step Guidance

Study Guide - Practice Questions