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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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The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

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

Organisms can be classified according to their source of energy Organisms can be classified according to their source of energy
During World War I, advancing armies unloosed ferocious artillery barrages to destroy deeply entrenc During World War I, advancing armies unloosed ferocious artillery barrages to destroy deeply entrenc
Calculation of body mass index. To determine your BMI, find the value for your height on the left ... Calculation of body mass index. To determine your BMI, find the value for your height on the left ...
Induration measurement in a tuberculin skin test, a type IV hypersensitivity. Induration measurement in a tuberculin skin test, a type IV hypersensitivity.
Eating Disorders and Body Image (2 of 2) Eating Disorders and Body Image (2 of 2)
Rock Type Influences Weathering Rock Type Influences Weathering
Video: Energy Flow - Trophic Levels and Food

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