If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Your heart beats over 36 million times a year.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Body size and population density of herbivorous mammals
Eating Disorders and Body Image (2 of 2)
Electrolytes in Body Fluids
Body plan of a lobster (Homarus americanus)
Inappropriate positions of organs and body structures in homeotic mutants
For each chromosome type in the body, there are two copies. One is from the mother, and one is from