BIO 210 Ch. 5 Flashcard

Front

What is the difference between soft and hard keratin?

Back

Soft keratin is more flexible and found in skin, while hard keratin is tougher and found in hair and nails.

Front

List the epidermal strata in the correct order from outermost to innermost.

Back

Stratum corneum, Stratum lucidum, Stratum granulosum, Stratum spinosum, Stratum basale.

Front

What condition might Mary Beth have if she has a bronzed skin tone and is unaffected by UV light?

Back

Addison's Disease.

Front

What is the Rule of Nines?

Back

A method to calculate the area of a burn injury.

Front

How does the epidermis receive nutrients and get rid of waste?

Back

Through diffusion from the dermis.

Front

What is the primary function of the epidermis?

Back

To provide a protective barrier against environmental hazards.

Front

What are the main components of the dermis?

Back

Collagen, elastin, blood vessels, and nerve endings.

Front

What role do melanocytes play in the skin?

Back

They produce melanin, which gives skin its color and protects against UV radiation.

Front

What is the significance of the stratum corneum?

Back

It is the outermost layer of the skin that provides a barrier to water loss and protects against environmental damage.

Front

What is the function of sebaceous glands?

Back

They secrete sebum, which lubricates and waterproofs the skin and hair.