Chapter 3 Exam

The ____ is a protective barrier made up of sebum, lipids, sweat, and water that forms a hydro lipid film to protect the skin from drying out and from exposure to external factors that could damage it.

Acid Mantle

_____ is a fibrous, connective tissue made from protein that gives the skin form and strength.

Collagen

Identify a factor that weakens collagen

Age

Which of the following statements is true of elastin?

It gives the skin its flexibility and elasticity

Daily use of a broad-spectrum with a sun protection factor(SPF) of 15 or higher can ____.

Help the melanin protect the skin from burning, skin cancer, and premature age

Which of the following statements is true of the dermis?

It is the skin's underlying layer and extends to form that subeudorous tissue

Which of the following roles does the barrier function play in the skin?

It keeps the skin moist lay preventing water evaporation

Cosmetologists should have a thorough understanding of skin structure and growth because ____.

Knowing the skins underlying structure and needs is crucial to providing excellent skin care for clients

Skin color-whether fair, medium, or dark-depends primarily on _____.

Melanin

____ refers to the tiny grains of pigment deposited into cells in the stratum germination layer of the epidermis and papillary layers of the dermis.

Melanin

_____ exclusively transmit impulses from the brain or spinal cord to the muscles or glands.

Motor Nerve Fibers

When the environmental temperature changes and the skins blood and sudoriferous glands make necessary adjustments to help cool down the body by the evaporation of sweat, the function of _____.

Heart Regulation

A physician who specializes in diseases and disorders of the skin, hair, and nails is known as a _____.

Dermatologist

____ is a medical branch of science that deals with the study of the skin and it's nature, structure, functions, diseases, and treatment.

Dermatology

The skin gets its strength, form, and flexibility from two protein fibers found within the ____.

Dermis

Which of the following factors is most likely to increase the flow of sebum?

Emotional Stress and Hormone Imbalances

The ___ is the outermost and the thinnest layer of the skin and is made up of five layers-stratum corneum, stratum lucidum, stratum granulesum, stratum spinousum, and stratum germineutium.

Epidermis

Which of the following is a type of melanin that is dark brown to black color?

Eumelenin

____ is a type of melanin that is red to yellow in color.

Pheomelanin

The ___ is the deeper layer of the dermis that supplies the skin with oxygen and nutrients.

Reticular Layers

Which of the following is a fatty or oily secretion that lubricates the skin and preserves the softness of the hair?

Sebum

Which of the following is one of the six practical functions of the skin?

Sensation

Differences in genetic skin color among people are due to ____.

The amount of melanin activated in the skin and the way it is distributed

Which of the following actions is most likely to slow the weakening of collagen and elastic fibers and helps the skin look younger longer?

keeping the skin free of disease

Which of the following is a function of subconscious tissue?

the body's smoothness and contour