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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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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Filter in the vena cava prevents an embolus from traveling to the heart, lungs, or brain; A, Greenfi Filter in the vena cava prevents an embolus from traveling to the heart, lungs, or brain; A, Greenfi
heart heart
Heart Model 2 Heart Model 2
Sequence of patient positions for heart auscultation Sequence of patient positions for heart auscultation
The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce
The physician uses auscultation to listen to a patient’s heart. The physician uses auscultation to listen to a patient’s heart.
Video: Primary Active Transport - electrochemical gradient and ion transport / water movement

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