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The human body produces and destroys 15 million blood cells every second.

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Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

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Everyone has one nostril that is larger than the other.

Germination of grass seeds involves mobilization of stored reserves Germination of grass seeds involves mobilization of stored reserves
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Variable Gases: Ozone Variable Gases: Ozone
Because vitamin A is stored in the liver, chicken liver is a potent source of this vitamin Because vitamin A is stored in the liver, chicken liver is a potent source of this vitamin
Video: Physiology of Asthma

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