Test Ch 3 Skin Structure and Function

Front

What is the principal fibrous protein component of hair and nails?

Back

Keratin

Front

What protein is interwoven with collagen fibers?

Back

Elastin

Front

What type of melanin is red to yellow in color?

Back

Pheomelanin

Front

What is the average weight range of an adult's skin when stretched out?

Back

19-21 pounds

Front

What are the appendages of the skin?

Back

Hair, nails, sebaceous glands, and sudoriferous glands.

Front

What is the outermost layer of the skin called?

Back

Epidermis

Front

What is the function of sebaceous glands?

Back

To produce oil (sebum) that lubricates the skin and hair.

Front

What is the role of melanocytes in the skin?

Back

To produce melanin, which gives skin its color.

Front

What is the function of the dermis layer of the skin?

Back

To provide strength and elasticity, containing collagen and elastin fibers.

Front

What is the significance of the stratum corneum?

Back

It is the outermost layer of the epidermis, providing a barrier to protect underlying tissues.