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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Did you know?
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.