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.
Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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Your heart beats over 36 million times a year.
Did you know?
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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Color-enhanced scanning electron micrograph of HIV virus (red) infecting T-helper cells (green).