There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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There are more sensory neurons in the tongue than in any other part of the body.
This chart illustrates the four quadrants in which we can place the relationships between the state
Levels of Processing Affects Long-Term but not Short-Term Memory