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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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There are more sensory neurons in the tongue than in any other part of the body.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Habitat corridor found in Banff National Park. Habitat corridor found in Banff National Park.
The Blue-bearded Bee-eater Nyctyornis athertoni is a large species of bee-eater found in South Asia. The Blue-bearded Bee-eater Nyctyornis athertoni is a large species of bee-eater found in South Asia.
The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue
Researchers have found that science instruction can be quite effective in grades 4 to 7. Researchers have found that science instruction can be quite effective in grades 4 to 7.
The U.S. DOT hazardous materials placards as found in the 2012 Emergency Response Guidebook. ... The U.S. DOT hazardous materials placards as found in the 2012 Emergency Response Guidebook. ...
We lost the 6th book in the series. After two months, we finally found it. We lost the 6th book in the series. After two months, we finally found it.
Video: Splitting of Sugar, Oxidation/ Reduction & ATP Generation

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