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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?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.