Question 1

Which of the following best describes the primary function of the integumentary system?

Accepted Answer

Protection of the body from various kinds of damage, such as loss of water or abrasion from outside

Question 2

The skin is composed of three major layers. Which layer is also known as the subcutaneous layer?

Accepted Answer

Hypodermis

Question 3

Which layer of the epidermis contains stem cells that continually replenish the layers of cells above?

Accepted Answer

Stratum basale

Question 4

A patient presents with a burn that is red, blistered, and very painful, involving both the epidermis and part of the dermis. What type of burn is this?

Accepted Answer

Second degree burn

Question 5

Which of the following cells found in the stratum basale are responsible for producing the pigment that protects DNA from UV damage?

Accepted Answer

Melanocytes

Question 6

Which layer of the epidermis is composed entirely of dead, keratinized cells and is responsible for the skin's protective property?

Accepted Answer

Stratum corneum

Question 7

Which type of skin cancer arises from melanocytes and is known for its aggressive nature and poor prognosis?

Accepted Answer

Melanoma

Question 8

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

Accepted Answer

Production of red blood cells

Question 9

A sunscreen with SPF 30 protects against approximately what percentage of UVB rays?

Accepted Answer

$$97\%$$

Question 10

Which of the following best explains why third degree burns are often painless?

Accepted Answer

Nerve endings in the affected area are destroyed

Question 11

Which layer of the epidermis contains lamellar granules that release lipids and proteins, forming a hydrophobic barrier?

Accepted Answer

Stratum granulosum

Question 12

Which of the following structures anchors the epidermis to the dermis?

Accepted Answer

Basement membrane

Question 13

Which type of sweat gland is most common and is responsible for regulating body temperature?

Accepted Answer

Eccrine gland

Question 14

Which phase of the hair cycle is characterized by active growth and accounts for about $$90\% of $$scalp follicles at any given time?

Accepted Answer

Anagen

Question 15

A patient has a raised, red, and scaly lesion on the back of their hand. Which type of skin cancer is most likely?

Accepted Answer

Squamous cell carcinoma

Question 16

Which of the following is a modified apocrine gland found in the ear canal?

Accepted Answer

Ceruminous gland

Question 17

Which structure is responsible for making hair stand up when you are cold or frightened?

Accepted Answer

Arrector pili muscle

Question 18

Which of the following is NOT a risk factor for skin cancer?

Accepted Answer

Dark brown skin and hair

Question 19

Which layer of the skin is avascular and relies on diffusion from the underlying dermis for oxygen and nutrients?

Accepted Answer

Epidermis

Question 20

A topical medication is absorbed through the skin. Which property of the skin allows for this function?

Accepted Answer

Absorption

The Integumentary System: Structure and Function

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