The biology of human skin

Chapter 1

The architecture of our outer shield

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Chapter 2

The evolutionary rainbow of human pigment

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Chapter 3

A bustling microscopic wilderness

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Chapter 4

The magic of self-repair and healing

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YOUR GOAL

Master of The biology of human skin

Ch 1 · The architecture of our outer shield

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teacher Twenty-eight days, twenty-eight days, we get a brand new shield!

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teacher The shock absorbing fatty basement

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Fun Fact

Skin weight: The skin of an average adult weighs about 8 to 11 pounds, making up roughly 16 percent of total body weight.

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teacher The bouncy cushioning engine room

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Glossary

epidermis (noun)
The outermost layer of cells on the body of an animal, which overlies the dermis. In 1665, Italian physician Marcello Malpighi first analyzed the epidermis using an early compound microscope.

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Quiz

Which specialized skin receptors are responsible for detecting deep pressure and rapid vibrations?

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Gossip

Which skin superpower would you want most?

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Quiz

What substance makes the outermost cells of the human skin tough and water-resistant?

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Quiz

What percentage of an average adult's body weight is made up of skin?

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Quiz

What protein gives the dermis layer of human skin its strength and structural toughness?

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Quiz

How often does the average human completely replace their outer epidermis layer?

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Quiz

What is the primary function of the hypodermis layer of human skin?

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Quiz

Which layer of the human skin is completely waterproof and lacks blood vessels?

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Quiz

Which layer of human skin contains the sweat glands and hair follicles?

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