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Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

The mammalian urinary system including the basic functional unit of the nephron. The mammalian urinary system including the basic functional unit of the nephron.
Respiratory system Respiratory system
Role of Desirable and Undesirable Events on Susceptibility to Upper Respiratory Infections Role of Desirable and Undesirable Events on Susceptibility to Upper Respiratory Infections
Pathology of the Digestive System Pathology of the Digestive System
The transition between steps usually occurs at a temperature that would not interfere with cold ... The transition between steps usually occurs at a temperature that would not interfere with cold ...
Female Reproductive System "الجهاز التناسلي للأنثى" Female Reproductive System "الجهاز التناسلي للأنثى"
Video: Fetal development - Weeks 9 to 38

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