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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.
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There are 20 feet of blood vessels in each square inch of human skin.
![Proper placement and monitoring of an automatic blood pressure cuff will reduce the risk of injury o](https://biology-forums.com/gallery/47/medium_2137_18_05_12_5_47_53.jpeg)
![The typical distribution of neurofibrillary tangles and amyloid plaques in the brains of patients ...](https://biology-forums.com/gallery/30/medium_548020_06_06_17_11_06_39_303681914.png)