The human body produces and destroys 15 million blood cells every second.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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.
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Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.
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The average adult has about 21 square feet of skin.
Fluid compartments in a typical vertebrate.
Pressure testing the cooling system. A typical hand-operated pressure tester applies pressure equal ...
A typical two-wire coil-on-plug ignition system showing the triggering and the switching being ...