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Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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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.

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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

16 weeks old human fetus 16 weeks old human fetus
20 weeks old human fetus 20 weeks old human fetus
fetus 12 weeks fetus 12 weeks
Men who are at risk for heart disease and report work-related stressors are at greater risk of death ... Men who are at risk for heart disease and report work-related stressors are at greater risk of death ...
Hospice care is based on the belief that when death is inevitable, professional caregivers should ... Hospice care is based on the belief that when death is inevitable, professional caregivers should ...
This spark plug boot on an overhead camshaft engine has been arcing to the valve cover causing a ... This spark plug boot on an overhead camshaft engine has been arcing to the valve cover causing a ...
Video: Baroreceptor Reflex

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