Quiz on Human Skin

What is the largest organ in the human body?

• Heart

• Brain

• Liver

• Skin

What is the main function of the skin?

• To produce blood

• To protect organs and prevent infections

• To digest food

• To pump oxygen

How many layers does human skin have?

• One

• Two

• Three

• Four

Which layer of the skin is visible?

• Dermis

• Epidermis

• Hypodermis

• Subdermis

What is the role of the dermis?

• It is mostly made of fat

• It is where blood vessels and nerves are at work

• It is the part you can see

• It is where hair grows from

How thick is the average human skin?

• 0.5 millimeters

• 1.5 millimeters

• 2.5 millimeters

• 3.5 millimeters

What happens to old skin cells?

• They dissolve

• They are absorbed into the body

• They are pushed to the surface

• They turn into new cells

How long does it take for new skin cells to be made?

• One day

• One week

• Two weeks to a month

• Two months

Which animal absorbs water through its skin?

• Polar bear

• Frog

• Ostrich

• Pig

What is unique about polar bear skin?

• It is white to reflect sunlight

• It is black to absorb heat from the sun

• It is transparent

• It is blue to blend with the ocean