Skin Layers

What is the medical branch of science that deals with the study of skin—its nature, structure, functions, diseases, and treatment?

• Dermatology

• Cardiology

• Neurology

• Endocrinology

As a nail technician, you must recognize adverse conditions including irritated or inflamed skin conditions, diseases, and infectious skin disorders so that clients can be referred to whom if needed?

• A medical professional for treatment

• A fitness instructor for exercise

• A nutritionist for dietary advice

• A cosmetologist for beauty treatments

What is the approximate surface area of the skin of an average adult when stretched out?

• 1,000 square inches

• 2,000 square inches

• 3,000 square inches

• 4,000 square inches

Which part of the body has the thickest skin?

• Around the eyelids

• On the palms of our hands and soles of our feet

• The back of the neck

• The stomach area

What is the only barrier against the environment mentioned in the text?

• Muscles

• Bones

• Skin

• Hair

What are the appendages of the skin?

• Hair, nails, and sweat and oil glands

• Muscles, nerves, and blood vessels

• Eyelids, lips, and ears

• Fingernails, toenails, and teeth

What is the outermost and thinnest layer of the skin called?

• Dermis

• Stratum corneum

• Epidermis

• Stratum granulosum

Which layer of the skin is responsible for the growth of the epidermis?

• Stratum lucidum

• Stratum corneum

• Stratum granulosum

• Stratum germinativum

What is the function of melanocytes in the skin?

• To produce keratin

• To protect the skin from ultraviolet energy

• To replace dead cells

• To thicken the skin

What is a callus?