Chapter 3 Skin structure and Growth

All of the following are reasons cosmetologist should understand skin structure and growth except

Diagnosing and providing treatment for abnormal skin conditions, illness, or diseases requires knowledge of skin structure and growth

What is the underlying or inner layer of the skin

dermis

Which layer of the skin 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

What gives the body smoothness and contour while providing a protective cushion for the skin

subcutaneous tissue

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

Which nerve fibers in the skin stimulate muscles

motor nerve fibers

Which sentence best defines melanin

These tiny grains of pigment are produced by melanocytes in the stratum germinativum

A broad-spectrum sunscreen is one that

Has been shown to protect against UVA and UVB radiation from the sun

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

Which response describes a cause of wrinkles or sagging skin

collagen fibers loose their strength due to exposure to UV light

Which two structures give the skin strength, form, and flexibility

collagen and elastin

What is the function of elastin

It gives the skin flexibility and elasticity

Which is a reasonable prediction of an outcome for a client who does not use a broad spectrum sunscreen with a sun protection faster(SPF) of 15 or higher

Collagen and elastin fibers will weaken, and the clients skin will age prematurely

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

What is the function of sebaceous glands

to secrete oil to lubricate the skin

What is the function of sudoriferous glands

to excrete sweat to regulate body temperature and eliminate waste products

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 describe a defense mechanism the skin uses to protect the body except

Hair follicles pull bacteria from the surface of the skin

Which example illustrates the skins heat regulation function

Sudoriferous glands excrete perspiration

Water loss through perspiration is an example of which function of the skin

excretion

The medical branch of science that deals with the study of the skin, its functions and diseases, is

dermatology

The layer of the skin that is seen and treated by the cosmetologist is the

stratum corneum

What is the fibrous protein that is the principle component of the hair and nails

keratin

Which types of nerve fibers carry impulses from the brain to the muscles

motor

The melanin produced by the body that is red to yellow in color is

Pheomelanin

helps protect sensitive cells from UV rays

Melanin

All of the following are skin functions except

Add necessary body weight to maintain good health

The fibrous protein that gives skin its flexibility and helps skin regain its shape after being expanded is

Elastin

Oil glands that are connected to hair follicles are also called

Sebaceous glands

Water is the number one nutrient of the body and composes what percentage of the body's skin

50 to 70 percent