3

Question 1

subcutaneous tissue

Answer 1

also known as adipose or subcutis tissue; fatty tissue found below the dermis that gives smoothness and contour to the body, contains fats for energy, and acts as a protective cushion for the skin

Question 2

broad-spectrum sunscreen

Answer 2

sunscreen product that has been shown to protect from burning, skin cancer, and premature aging; protects against both UVA and UVB radiation from the sun

Question 3

regulate the excretion of perspiration from the sweat glands and control the flow of sebum to the surface of the skin

Answer 3

regulate the excretion of perspiration from the sweat glands and control the flow of sebum to the surface of the skin

Question 4

arrector pili muscles

Answer 4

small, involuntary muscles in the base of the hair follicle that cause goosebumps

Question 5

hair papillae

Answer 5

cone-shaped elevations at the base of the follicle that fit into the hair bulb; papillae are filled with tissue that contains the blood vessels and cells necessary for hair growth and follicle nourishment

Question 6

sebaceous glands

Answer 6

also known as oil glands; glands connected to hair follicles; secrete sebum

Question 7

pheomelanin

Answer 7

type of melanin that is red to yellow in color

Question 8

collagen

Answer 8

fibrous, connective tissue made from protein; that gives the skin form and strength

Question 9

barrier function

Answer 9

complex of lipids that keep the skin moist by preventing water evaporation and guards against irritants penetrating the skin surface; and to help regulate the skin’s pH

Question 10

melanin

Answer 10

tiny grains of pigment (coloring matter) produced by melanocytes deposited into cells in the stratum germinativum layer of the epidermis and papillary layers of the dermis

Question 11

motor nerve fibers

Answer 11

fibers of the motor nerves that are distributed to the arrector pili muscles attached to hair follicles; carry impulses from the brain to the muscles

Question 12

sensory nerve fibers

Answer 12

fibers of the sensory nerves that react to heat, cold, touch, pressure, and pain

Question 13

sweat glands

Answer 13

also known as sudoriferous glands; excrete perspiration and detoxify the body by excreting excess salt and unwanted chemicals

Question 14

dermatology

Answer 14

medical branch of science that deals with the study of skin and its nature, structure, functions, diseases, and treatment

Question 15

sebum

Answer 15

fatty or oily secretion that lubricates the skin and preserves the softness of the hair

Question 16

stratum corneum

Answer 16

also known as horny layer; outermost layer of the epidermis

Question 17

papillary layer

Answer 17

outer layer of the dermis, directly beneath the epidermis

Question 18

stratum granulosum

Answer 18

also known as granular layer; layer of the epidermis composed of cells filled with keratin that resemble granules

Question 19

stratum spinosum

Answer 19

also known as the spiny layer; layer of the epidermis just above the stratum germinativum (basal) layer

Question 20

stratum lucidum

Answer 20

clear, transparent layer of the epidermis under the stratum corneum

Question 21

dermal-epidermal junction

Answer 21

top of the papillary layer where it joins the epidermis

Question 22

elastin

Answer 22

protein base similar to collagen that forms elastic tissue

Question 23

epidermis

Answer 23

outermost and thinnest layer of skin, made up of five layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum

Question 24

melanocytes

Answer 24

cells that produce the dark skin pigment called melanin

Question 25

dermis

Answer 25

also known as derma, corium, cutis, or true skin; underlying or inner layer of the skin

Question 26

subcutaneous layer

Answer 26

also known as hypodermis or superficial fascia; consists of subcutaneous (fat) tissue located beneath the dermis

Question 27

eumelanin

Answer 27

type of melanin that is dark brown to black in color

Question 28

secretory coil

Answer 28

coiled base of the sudoriferous (sweat) gland

Question 28

dermatologist

Answer 28

physician who specializes in diseases and disorders of the skin, hair, and nails

Question 29

stratum germinativum

Answer 29

commonly called the basal cell layer; deepest, live layer of the epidermis that produces skin cells and is responsible for growth

Question 29

tactile corpuscles

Answer 29

small epidermal structures with nerve endings that are sensitive to touch and pressure

Question 30

sudoriferous glands

Answer 30

also known as sweat glands; excrete perspiration and detoxify the body by excreting excess salt and unwanted chemicals

Question 31

dermal papillae

Answer 31

membranes of ridges and grooves that attach to the epidermis

Question 32

reticular layer

Answer 32

deeper layer of the dermis that supplies the skin with oxygen and nutrients

Question 33

keratin

Answer 33

fibrous protein of cells that is also the principal component of skin, hair and nails