Chapter 7 Skin Structure & Growth

What is the medical branch of science that deals with the study of skin?

• neurology

• cardiology

• dermatology

• osteology

If the skin of an average adult were stretched out, it would cover more than how many square inches?

• 5,000

• 3,000

• 2,000

• 1,500

The surface of healthy skin should:

• be slightly acidic

• neutral

• be slightly alkaline

• highly acidic

The outermost layer of the skin is the:

• dermis

• epidermis

• papillary

• reticular

What is the principal component of hair and nails?

• collagen

• elastin

• keratin

• melanin

Which layer of the epidermis is also known as the basal cell layer?

• stratum germinativum

• stratum granulosum

• stratum spinosum​

• stratum corneum

The pigment produced to protect the skin from the effects of ultraviolet sun rays is called:

• keratin

• melanin

• elastin

• collagen

The muscles that can cause goose bumps are called the _____ muscles.

• papillary

• sensory

• arrector pili

• secretory

The small, cone-shaped elevations at the bottom of hair follicles are called the:

• tactile corpuscles

• sebaceous glands

• melanocytes

• dermal papillae

The epidermal-dermal junction is located at the top of the _____ layer.

• papillary

• stratum spinosum

• stratum lucidum

• reticular​