|
|
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.