Integumentary System

Question 1

What is the major tissue layer of the skin that is regarded to be superficial and consists of epithelial tissue?

Answer 1

Epidermis

Question 2

What is the major tissue layer of the skin that is regarded to be the second layer and consists of connective tissue responsible for most of the structural strength of the skin?

Answer 2

Dermis

Question 3

What is the process that transforms cell shapes and chemical composition?

Answer 3

Keratinization

Question 4

What is the protein that makes the cell more rigid and durable?

Answer 4

Keratin

Question 5

True or False.

The epidermis contains blood vessels.

Answer 5

False.

The epidermis doesn’t contain blood vessels.

Question 6

An epidermis layer that is regarded to be the deepest and consists of cuboidal or columnar cells.

Answer 6

Stratum basale

Question 7

Recite the layers of epidermis from bottom to top.

Answer 7

1. Stratum basale
2. Stratum spinosum
3. Stratum granulosum
4. Stratum lucidum
5. Stratum corneum

Question 8

What are the two elements that provide structural strength for the dermis?

Answer 8

1. Collagen

2. Elastic fibers

Question 9

The projections at the upper part of the dermis that extend toward the epidermis (reason for fingerprints).

Answer 9

Dermal papillae

Question 10

What are the two elements that provide structural strength for the epidermis?

Answer 10

1. Keratin

2. Desmosomes

Question 11

What layer of the epidermis is often dark because of the keratohyalin granules that are present?

Answer 11

Stratum granulosum

Question 12

What layer of the epidermis undergo mitotic divisions?

Answer 12

Stratum basale

Question 13

What is normally the thickest layer in the epidermis?

Answer 13

Stratum spinosum

Question 14

What epidermal layer is found only in thick skin?

Answer 14

Stratum lucidum

Question 15

What is the specialized pigment-producing cell that can be found in the basal lamina?

Answer 15

Melanocyte

Question 16

Where can you find the antigen-presenting cells (Langerhans cell)?

Answer 16

Stratum spinosum

Question 17

What cells are essential for sensing gentle touch?

Answer 17

Merkel cells

Question 18

What part of the hair extends beyond the skin surface?

Answer 18

Hair shaft

Question 19

What do you call the small bundle of smooth muscle cells that pull the hair shafts to a more erect position if it contracts?

Answer 19

Arrector pili muscle

Question 20

What phenomenon happens during contractions of the arrector pili muscle?

Answer 20

goosebumps

Question 21

What refers to the hard plates of keratin on the dorsal surface of each distal phalanx?

Answer 21

Nails

Question 22

What major skin glands are branched acinar-producing sebum?

Answer 22

Sebaceous glands

Question 23

What is the secretion mechanism of sebaceous glands?

Answer 23

Holocrine secretion

Question 24

What is the lipid product that gradually covers the surface of both the epidermis and hair shafts?

Answer 24

Sebum

Question 25

What kind of sweat gland releases sweat that regulates the body temperature?

Answer 25

Eccrine sweat glands

Question 26

What kind of sweat gland releases viscous products that are largely confined in the axillary and perineal regions?

Answer 26

Apocrine sweat glands

Question 27

True or False. | The epidermis supplies blood to the dermis.

Answer 27

False. | The epidermis has no blood vessels and relies on the dermis for blood supply.

Question 28

What can you see in the skin if it lacks melanin?

Answer 28

Freckles

Question 29

What is the nerve end specialized for sensing coarse touch, pressure, and vibrations?

Answer 29

Pacinian corpuscles

Question 30

What is the nerve ending that is sensitive to soft or light touch?

Answer 30

Meissner's corpuscles