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Did you know?
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Your heart beats over 36 million times a year.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
![The conduction system of the heart; traces the path of the electrical impulse that stimulates the he](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_09_85202259.jpeg)
![This red gasoline container holds about 30 gallons of gasoline and is used to fill vehicles used ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_3_10_42_295132149.png)