skin
It forms a protective barrier. This topic is part of Human Body within Science & Nature. This page currently draws on 67 supporting questions, with answers and bonus facts available below.
skin trivia questions
Skin is the body's largest what?
Answer: Organ
Bonus fact: It forms a protective barrier.
What is the outermost major layer of skin?
Answer: Epidermis
Bonus fact: The epidermis contains keratin-producing cells.
Which pigment helps protect skin from ultraviolet radiation?
Answer: Melanin
Bonus fact: Melanocytes produce melanin.
A chameleon's rapid color changes are produced largely by structural changes in specialized skin cells called what?
Answer: Iridophores
Bonus fact: Iridophores contain nanocrystals whose spacing can change how light is reflected.
What tiny creatures commonly found in household dust feed largely on shed skin flakes?
Answer: Dust mites
Bonus fact: Dust mites are microscopic relatives of spiders and can trigger allergies.
Freckles are small spots on the skin caused by localized increases in what pigment?
Answer: Melanin
Bonus fact: Freckles contain increased melanin pigment but not necessarily more pigment-producing cells.
Collagen is a major structural protein in skin, bones, and what?
Answer: Connective tissues
Bonus fact: Collagen provides strength to many tissues.
Compared with many frogs, toads often have what kind of skin?
Answer: Drier and bumpier
Bonus fact: Many toads have rough glandular skin.
What substance from inside aloe leaves is commonly used in skin products?
Answer: Gel
Bonus fact: The clear inner gel is used in many topical products.
Leprosy primarily affects the skin and what system?
Answer: Peripheral nerves
Bonus fact: Nerve damage can reduce sensation.
Melanin is a pigment found in skin, hair, and what?
Answer: Eyes
Bonus fact: Melanin contributes to coloration in many tissues.
What does melanin help protect skin from?
Answer: Ultraviolet radiation
Bonus fact: Melanin absorbs and disperses some UV radiation.