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There are 20 feet of blood vessels in each square inch of human skin.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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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.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many
The explosion of the Maine in Havana harbor, killing 260 men, caused much speculation in the newspap The explosion of the Maine in Havana harbor, killing 260 men, caused much speculation in the newspap
A well-folded letter fits easily into the envelope and is easily removed by the person who receives ... A well-folded letter fits easily into the envelope and is easily removed by the person who receives ...
How Much Food Does the World Produce Per Person? How Much Food Does the World Produce Per Person?
MRI scans of normal elderly person compared to one with Alzheimer's MRI scans of normal elderly person compared to one with Alzheimer's
Video: Barriers - eye structures, digestive mucosa, respiratory mucosa & genitourinary mucosa

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