$$\text{Sweat Rate} = 500\ \text{ml/day}$$

$$\text{Hair Growth} = 2.25\ \text{mm/week}$$

Question 1

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

Accepted Answer

Producing red blood cells

Question 2

The hypodermis is primarily composed of which tissue type, and what is its main function?

Accepted Answer

Adipose tissue; absorbs shock and insulates

Question 3

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

Accepted Answer

Stratum lucidum

Question 4

Keratinocytes are tightly connected by which type of cell junction?

Accepted Answer

Desmosomes

Question 5

Which cell type in the epidermis is responsible for activating the immune system?

Accepted Answer

Dendritic (Langerhans) cells

Question 6

A patient presents with a yellowish cast to their skin. Which condition is most likely responsible?

Accepted Answer

Jaundice

Question 7

Which pigment is responsible for the pinkish hue of fair skin?

Accepted Answer

Hemoglobin

Question 8

What is the primary function of eccrine sweat glands?

Accepted Answer

Producing sweat for thermoregulation

Question 9

Which structure is responsible for 'goose bumps'?

Accepted Answer

Arrector pili muscle

Question 10

A surgeon makes an incision parallel to cleavage lines in the skin. What is the expected outcome?

Accepted Answer

The incision will heal more readily with less scarring

Question 11

Which layer of the dermis contains dermal papillae and is responsible for fingerprints?

Accepted Answer

Papillary layer

Question 12

Which equation best represents the rate of insensible perspiration under normal conditions?

Accepted Answer

$$	ext{Sweat Rate} = 500\ 	ext{ml/day}$$

Question 13

Which of the following is a biological barrier in the skin?

Accepted Answer

Dendritic cells and macrophages

Question 14

A patient with third-degree burns covering 12% of their body, including their hands, is considered:

Accepted Answer

Critical, due to involvement of hands and \u003e10% coverage

Question 15

Which of the following is TRUE about melanoma?

Accepted Answer

It is highly metastatic and resistant to chemotherapy

Question 16

Which cell type in the stratum basale is responsible for producing pigment that protects against UV damage?

Accepted Answer

Melanocytes

Question 17

Which skin marking is caused by extreme stretching of the dermis?

Accepted Answer

Striae (stretch marks)

Question 18

Which of the following best describes the process of keratinization in the epidermis?

Accepted Answer

Cells flatten, organelles disintegrate, and keratohyaline granules form

Question 19

Which equation represents the average weekly growth of scalp hair?

Accepted Answer

$$	ext{Hair Growth} = 2.25\ 	ext{mm/week}$$

Question 20

Which of the following is a developmental aspect of aging skin?

Accepted Answer

Decreased subcutaneous fat and elasticity, leading to wrinkles

The Integumentary System: Structure, Function, and Clinical Aspects

Study Guide - Practice Questions