Did You Know?
The cornea is the only part of the body with no blood supply.
The cornea must remain transparent to allow light to enter the eye, so it has evolved to obtain oxygen directly from the air rather than from blood vessels. It's the fastest-healing tissue in the human body and can recover from minor injuries within 24-48 hours.
Did You Know?
The acid in your stomach is strong enough to dissolve metal.
Stomach acid, or hydrochloric acid, has a pH of between 1 and 3, making it strong enough to...
Did You Know?
The average person has 67 different species of bacteria in their belly button.
A study of belly button biodiversity found a diverse ecosystem of microorganisms living in this small space. Each...
Did You Know?
An adult human body contains approximately 100,000 miles of blood vessels.
If all the arteries, veins, and capillaries in your body were laid end to end, they would circle...