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問題一覧
1
Water is the number one nutrient of the body and composes what percentage of the body's skin?
50 to 70 percent
2
A broad-spectrum sunscreen is one that ____.
has been shown to protect against UVA and UVB radiation from the sun
3
What gives the body smoothness and contour while providing a protective cushion for the skin?
subcutaneous tissue
4
What is the underlying or inner layer of the skin?
dermis
5
Wanda's skin has recently been experiencing a significant amount of new wrinkles. What could explain these new wrinkles?
Wanda has recently been working at an outdoor job that requires frequent exposure to very cold temperatures, which weakens collagen fibers
6
All of the following are skin functions EXCEPT ____.
add necessary body weight to maintain good health
7
Which two structures give the skin strength, form, and flexibility?
collagen and elastin
8
Lately, a client has noticed body sweat much more than typical in the past. Which situation could explain this increased perspiration?
The client is taking a new prescription drug.
9
What is the function of sudoriferous glands?
to excrete sweat to regulate body temperature and eliminate waste products
10
Which sentence best defines melanin?
These tiny grains of pigment are produced by melanocytes in the stratum germinativum.
11
Which nerve fibers in the skin stimulate muscles?
motor nerve fibers
12
The layer of skin that is seen and treated by the cosmetologist is the _____.
stratum corneum
13
What is the function of sebaceous glands?
to secrete oil to lubricate the skin
14
What is the function of elastin?
It gives the skin flexibility and elasticity.
15
The fibrous protein that gives skin its flexibility and helps skin regain its shape after being expanded is _____.
elastin
16
Water loss through perspiration is an example of which function of the skin?
excretion
17
The melanin produced by the body that is red to yellow in color is _____.
pheomelanin
18
What is a fibrous protein that is the principal component of hair and nails?
keratin
19
The medical branch of science that deals with the study of the skin, its functions, and diseases is _____.
dermatology
20
Which response describes a cause of wrinkles or sagging skin?
collagen fibors lose their strength due to exposure to UV light
21
Nerve fibers that send messages to the central nervous system and brain to react to heat, cold, touch, pressure, and pain are called ____.
sensory nerve fibers
22
Which is a reasonable prediction of an outcome for a client who does not use a broad-spectrum sunscreen with a sun protection factor (SPF) of 15 or higher?
Collagen and elastin fibers will weaken, and the client's skin will age prematurely.
23
All of the following are reasons cosmetologists should understand skin structure and growth EXCEPT:
Diagnosing and providing treatment for abnormal skin conditions, illnesses, or diseases requires knowledge of skin structure and growth.
24
Which sentence best describes the difference in the functions of pheomelanin and eumelanin in the skin?
A person with predominantly pheomelanin tends to have rosy skin, whereas a person with predominantly eumelanin tends to have cooler skin tones.
25
Which layer of the epidermis forms unique fingerprints and footprints and is only located on the palms of the hands, the soles of the feet, and the digits?
stratum lucidum
26
Which example illustrates the skin's heat regulation function?
Sudoriferous glands excrete perspiration.
27
Which type of nerve fibers carry impulses from the brain to the muscles?
motor
28
All of the following describe a defense mechanism the skin uses to protect the body EXCEPT:
Hair follicles pull bacteria from the surface of the skin.
29
Oil glands that are connected to hair follicles are also called ____.
sebaceous glands
30
_____ helps protect sensitive cells from UV rays.
Melanin