There are 20 feet of blood vessels in each square inch of human skin.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.
Muscular system
Anatomical Charts Digestive System
The Major Components of the Limbic System
Structure and action of the T7 phage gene 4 helicase