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Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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The average office desk has 400 times more bacteria on it than a toilet.

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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

The energy input and output of glycolysis. The energy input and output of glycolysis.
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
Ground Ivy Ground Ivy
Drive-on ramps are dangerous to use. The wheels on the ground level must be chocked (blocked) to ... Drive-on ramps are dangerous to use. The wheels on the ground level must be chocked (blocked) to ...
The major cortical input and output pathways of the posterior parietal association cortex. Shown are ... The major cortical input and output pathways of the posterior parietal association cortex. Shown are ...
Figure and Ground Figure and Ground
Video: Requirements for nervous signals

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