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Did you know?
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
The FDA recognizes 118 routes of administration.
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?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.