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Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f
Grace Service, a YMCA missionary, explained that these porters worked at the base of Mount Omei in S Grace Service, a YMCA missionary, explained that these porters worked at the base of Mount Omei in S
Five Factors of Personality and the Traits they Include Five Factors of Personality and the Traits they Include
Calcium Channel Blockers (Class IV) and Miscellaneous Drugs for Dysrhythmias Calcium Channel Blockers (Class IV) and Miscellaneous Drugs for Dysrhythmias
Atmospheric properties include temperature, pressure, and humidity Atmospheric properties include temperature, pressure, and humidity
Video: Endocytosis -Types and Phagocytosis

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