|
|
Did you know?
Your heart beats over 36 million times a year.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.