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Author Question: Physical activity may reduce some of the cognitive declines that come from aging. Indicate ... (Read 37 times) |
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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.