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Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Comparison of normal and sickle cell red blood cells. Comparison of normal and sickle cell red blood cells.
Normal changes in the breast during a woman's life span Normal changes in the breast during a woman's life span
Although the Democrats and the Republicans represent slightly different slices of the center, those ... Although the Democrats and the Republicans represent slightly different slices of the center, those ...
Normal ECG tracing. Normal ECG tracing.
A steady needle reading that drops 2 or 3 inches Hg when the engine speed is increased slightly ... A steady needle reading that drops 2 or 3 inches Hg when the engine speed is increased slightly ...
Video: Immune responses Animation

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