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There are more nerve cells in one human brain than there are stars in the Milky Way.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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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.

The deer mouse and the African elephant represent extremes among mammals of r versus K selection. The deer mouse and the African elephant represent extremes among mammals of r versus K selection.
Redlichida, such as this Paradoxides, may represent the ancestral trilobites. Redlichida, such as this Paradoxides, may represent the ancestral trilobites.
Worldwide Variations in Population and Income Levels Developed countries represent only 18% of the Worldwide Variations in Population and Income Levels Developed countries represent only 18% of the
Although the Democrats and the Republicans represent slightly different slices of the center, those ... Although the Democrats and the Republicans represent slightly different slices of the center, those ...
Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ... Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ...
Results of Mendel’s crosses using pea plants. The numbers represent the F2 plants showing a given ... Results of Mendel’s crosses using pea plants. The numbers represent the F2 plants showing a given ...
Video: Electrical Conduction System of the Heart

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