Chapter 03: Skin Structure and Growth - Learning Objectives

Which statement best describes the role difference between cosmetologists and dermatologists as presented?

• Cosmetologists are physicians who treat skin diseases; dermatologists provide beauty advice.

• Dermatologists are specialized physicians who study and treat the skin; cosmetologists advise clients on skin care but do not diagnose or prescribe.

• Both cosmetologists and dermatologists can prescribe medications for irregular skin conditions.

• Neither cosmetologists nor dermatologists need knowledge of skin structure.

How does staying current with advances in technology, ingredients, and delivery systems benefit a cosmetologist’s clients?

• It guarantees a cure for all skin diseases.

• It allows cosmetologists to offer state-of-the-art advice on protecting, nourishing, and preserving skin health and beauty.

• It eliminates the need to refer clients to dermatologists.

• It focuses only on hair care, not skin.

A client presents with an irregular skin condition that suggests a possible illness. Based on the guidance in this section, what is the appropriate action for a cosmetologist?

• Attempt to diagnose and prescribe an over-the-counter medication.

• Perform a medical treatment to correct it immediately.

• Refer the client to a dermatologist, who specializes in the study and treatment of skin.

• Ignore the condition and proceed with standard services.

Which statement best describes the epidermis?

• It is the outermost and thinnest layer of the skin with no blood vessels

• It is the thickest layer of skin and contains large blood vessels

• It is a subcutaneous layer rich in fat and nerves

• It is the middle skin layer that houses hair follicles

What is the primary role of the stratum corneum?

• Producing melanin

• Forming a protective barrier against infection, dehydration, chemicals, and mechanical stress

• Generating sweat and oil

• Anchoring the epidermis to the dermis

Which fibrous protein makes up the stratum corneum and is a principal component of skin, hair, and nails?

• Elastin

• Collagen

• Keratin

• Actin

The complex of lipids between cells in the stratum corneum that helps prevent water evaporation and irritant penetration is called the:

• Acid mantle

• Barrier function

• Sebaceous layer

• Horny plug

Which epidermal layer is described as clear and translucent, allowing light to pass through, and is found only on the palms, soles, and digits?

• Stratum spinosum

• Stratum granulosum

• Stratum lucidum

• Stratum germinativum

In which epidermal layer do cells look like granules and are filled with keratin, dying as they move upward to replace shed cells?

• Stratum corneum

• Stratum granulosum

• Stratum spinosum

• Stratum lucidum

Where does the process of skin cell shedding begin within the epidermis?

• Stratum germinativum

• Stratum spinosum

• Stratum corneum

• Stratum lucidum