The human integumentary system

artiteacher The evolutionary magic of melanin

artiteacher Skin protection

I shed a million cells to keep you safe from harm, A brand new living shield is wrapping up your arm.

artiteacher How the body regulates temperature

artiteacher The skin acts as a personal thermostat, using blood vessels and sweat glands to maintain a stable core temperature.

artiteacher Melanin is the natural pigment that determines skin color and protects cells from harmful solar radiation.

BETA

artiteacher Skin Shield Buddy * Tactile Shield (No) *

Jul 7

Fun Fact

Skin weight: The skin is your largest organ, accounting for about 16 percent of your total body weight.

Glossary

epidermis (noun)
The surface epithelium of the skin of a vertebrate, overlying the dermis. In 1852, Swiss histologist Albert von Kölliker published a detailed analysis of this protective tissue's cellular structure.

Gossip

Which climate does your skin feel happiest in?

Quiz

How many sweat glands does the average human body possess?

artiteacher The three layers of defense

Quiz

How many dead skin cells does an average human shed every single minute?

artiteacher The rapid skin cell renewal cycle

Quiz

What is the scientific term for blood vessels widening to release body heat?

Quiz

What percentage of human body weight does the skin typically account for?

Quiz

Which compound in the body is protected from UV destruction by high levels of melanin?

Quiz

Approximately how many days does it take for a new skin cell to travel to the surface?

Quiz

Which skin layer contains blood vessels, nerves, and sweat glands?

Quiz

What is the primary evolutionary benefit of having lighter skin in northern latitudes?