Skin Functions and Structure Quiz

What is one of the functions of the skin?

• Protection from water, air, infection, chemicals, UV radiation

• Production of hormones

• Digestion of food

• Absorption of nutrients

What is the top layer of the skin called?

• Epidermis

• Dermis

• Hypodermis

• Subcutaneous layer

What pigment do melanocytes produce?

• Melanin

• Keratin

• Collagen

• Elastin

How do dark-skinned and light-skinned people differ in terms of melanocytes?

• Dark-skinned people have more melanocytes

• Light-skinned people have more melanocytes

• Dark-skinned people have the same number of melanocytes, but each one produces more melanin

• Light-skinned people have the same number of melanocytes, but each one produces more melanin

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What does melanin protect the skin against?

• Harmful UV rays

• Bacterial infections

• Chemical burns

• Excessive moisture

What is a result of UV radiation mutating a skin cell's DNA?

• Skin cancer

• Sunburn

• Freckles

• Wrinkles

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What type of tissue is the dermis composed of?

• Dense irregular connective tissue

• Stratified squamous epithelium

• Adipose tissue

• Cartilage

What causes fingerprints?

• Dermal papillae

• Melanin production

• Sweat glands

• Hair follicles

What happens to blood vessels in the dermis during exercise?

• They swell

• They shrink

• They disappear

• They multiply

What is the function of the hypodermis or subcutaneous layer?

• Attaches the dermis to underlying organs

• Produces melanin

• Protects against UV radiation

• Regulates body temperature

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