Exploring the Functions of Your Skin

What is one of the primary functions of the skin?

• To act as a barrier against the outside environment

• To produce red blood cells

• To digest food

• To pump blood

Which layer of the skin is the outermost?

• Epidermis

• Hypodermis

• Dermis

• Subcutaneous tissue

How often are the cells on the outer layer of the epidermis replaced?

• Every four weeks

• Every six weeks

• Every two weeks

• Every week

What substance in the epidermis determines skin tone?

• Keratin

• Elastin

• Collagen

• Melanin

What does the dermis contain that helps in sensing touch?

• Fat cells

• Blood vessels

• Melanin

• Nerve endings

What is the function of sweat glands in the dermis?

• To produce oil

• To generate heat

• To produce sweat and regulate body temperature

• To store fat

What is the primary function of the hypodermis?

• To produce melanin

• To sense touch

• To store fat

• To generate sweat

What percentage of our body weight is made up by the skin?

• 10%

• 16%

• 25%

• 20%

How much area does the skin cover on an average human body?

• 2.5 square meters

• 2.0 square meters

• 1.73 square meters

• 1.5 square meters

What is the first layer of the skin called?

• Subcutaneous tissue

• Epidermis

• Hypodermis

• Dermis