Understanding Our Skin: The Largest Organ

Front

What percentage of the body does the skin account for?

Back

16%

Front

Which layer of the skin contains no blood vessels?

Back

Epidermis

Front

How does the body produce vitamin D?

Back

By converting a cholesterol molecule in the skin with sunlight.

Front

What is the primary function of melanin in the skin?

Back

To protect against UV rays.

Front

What happens to the skin as it ages?

Back

It loses elasticity and produces fewer new cells.

Front

What are the three main layers of the skin?

Back

Epidermis, Dermis, Hypodermis.

Front

What is the role of the dermis?

Back

It contains blood vessels, nerves, and connective tissue, providing strength and elasticity.

Front

What is the function of sweat glands?

Back

To regulate body temperature and excrete waste.

Front

What is the significance of the hypodermis?

Back

It anchors the skin to underlying tissues and stores fat.

Front

What is the role of keratin in the skin?

Back

To provide a protective barrier and waterproofing.