Question 1

Which of the following layers is only present in thick skin and helps reduce friction between the stratum corneum and stratum granulosum?

Accepted Answer

Stratum lucidum

Question 2

A patient presents with dry, brittle hair and flaky skin. Which gland is most likely underactive, and what is its main secretion?

Accepted Answer

Sebaceous gland; sebum

Question 3

Which cell type in the epidermis is primarily responsible for the immune response and acts as a macrophage?

Accepted Answer

Langerhans cell

Question 4

A person with a genetic mutation that prevents the production of melanin would most likely experience which of the following?

Accepted Answer

Increased risk of UV-induced DNA damage

Question 5

Which layer of the epidermis is responsible for the continuous renewal of epidermal cells and contains stem cells that divide frequently?

Accepted Answer

Stratum basale

Question 6

Which pigment is responsible for the yellowish tinge of skin in some populations and accumulates in the stratum corneum and hypodermis?

Accepted Answer

Carotene

Question 7

A burn patient loses the ability to regulate body temperature and excrete metabolic waste through the skin. Which structure is most likely damaged?

Accepted Answer

Sudoriferous glands

Question 8

Which of the following best describes the function of the hypodermis (subcutaneous layer)?

Accepted Answer

Anchors skin to underlying organs and insulates the body

Question 9

A biopsy of skin tissue reveals cells with dark clumps of cytoplasmic material and no nuclei. In which layer were these cells most likely found?

Accepted Answer

Stratum granulosum

Question 10

Which of the following is a function of sebum produced by sebaceous glands?

Accepted Answer

Prevents hair from becoming brittle

Question 11

A patient has a wound that is slow to heal and is prone to infection. Which layer of the dermis, if damaged, would most likely contribute to this due to its rich supply of blood vessels and immune cells?

Accepted Answer

Papillary layer

Question 12

Which of the following best explains why fair-skinned individuals appear pinkish?

Accepted Answer

Low melanin allows hemoglobin color to show through

Question 13

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

Accepted Answer

Synthesizes keratin

Question 14

Which type of sudoriferous gland is primarily responsible for thermoregulation and is widely distributed across the body?

Accepted Answer

Merocrine (eccrine) gland

Question 15

A person with a mutation that prevents the formation of the stratum corneum would most likely experience which of the following symptoms?

Accepted Answer

Increased water loss and vulnerability to infection

Question 16

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

Accepted Answer

Thick and parallel to the skin surface

Question 17

Which of the following cells is most directly involved in the sensation of touch?

Accepted Answer

Merkel cell

Question 18

A person with a deficiency in the function of their apocrine glands would most likely notice a change in which of the following?

Accepted Answer

Odor in their armpits and pubic region

Question 19

Which of the following best explains why the hypodermis is an effective shock absorber?

Accepted Answer

It is composed mainly of adipose tissue

Question 20

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

Accepted Answer

Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

The Integumentary System: Structure and Function

Study Guide - Practice Questions

Study Guide - Flashcards