|
|
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Did you know?
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Did you know?
Medication errors are three times higher among children and infants than with adults.