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Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

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The average office desk has 400 times more bacteria on it than a toilet.

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There are more bacteria in your mouth than there are people in the world.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

The “first wave” of the U.S. women’s movement met enormous opposition. The women in this 1920 ... The “first wave” of the U.S. women’s movement met enormous opposition. The women in this 1920 ...
The basal ganglia are clusters of gray matter that control learned movement and are involved with ... The basal ganglia are clusters of gray matter that control learned movement and are involved with ...
Internal female reproductive tract. Internal female reproductive tract.
Abdominal Massage Facilitates Bowel Movement. Abdominal Massage Facilitates Bowel Movement.
Types of Movement at Synovial Joints Types of Movement at Synovial Joints
An internal promoter for transcription by RNA polymerase III An internal promoter for transcription by RNA polymerase III
Video: What is Reverse Osmosis?

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