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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
Blood is approximately twice as thick as water because of the cells and other components found in it.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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).
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.