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Cyanide works by making the human body unable to use oxygen.
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
![A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p](https://biology-forums.com/gallery/47/medium_14755_27_08_12_4_57_13_822621.jpeg)
![Traction is the application of a pulling force to maintain bone alignment during fracture healing. D](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_49_31_8986303.jpeg)