Skin Aging
Oil glands that are connected to hair follicles are also called _____.
Sebaceous glands
The layer of skin that is seen and treated by the cosmetologist is the _______?
Stratum corneum
What is a fibrous protein that is the principal component of hair and nails?
Keratin
What is the function of sebaceous glands?
To secrete oil to lubricate the skin
What gives the body smoothness and contour while providing a protective cushion for the skin?
Subcutaneous tissue
What causes wrinkles and sagging skin?
Collagen fibers lose their strength due to exposure to UV light.
What is the underlying or inner layer of the skin?
Dermis
Which sentence best defines melanin?
These tiny grains of pigment are produced by melanocytes in the stratum germinativum.
Which nerve fibers in the skin stimulate muscles?
Motor nerve fibers
_____ helps protect sensitive cells from UV rays
Melanin
Water is the number one nutrient of the body and composes what percentage of the body's skin?
50 to 70 percent
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
Illustrates the skin's heat regulation function?
Sudoriferous glands excrete perspiration
Which type of nerve fibers carry impulses from the brain to the muscles?
Motor
Which is a reasonable prediction of an outcome for a client who does 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.
What 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 tends to have cooler skin tones.
Pheomelanin
All the the following are skin functions EXCEPT _____.
Add necessary body weight to maintain good health
A broad-spectrum sunscreen is one that ______.
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
All of the following describes a defense mechanism the skin uses to protect the body EXCEPT:
Hair follicles pull bacteria from the surface of the skin.
What is the function of elastin?
It gives the skin flexibility and elasticity
Water loss through perspiration is an example of which function of the skin?
Excretion
Which two structures give the skin strength, form, and flexibility?
Collagen and elastin