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Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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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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Your heart beats over 36 million times a year.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Erythrocytes (red blood cells) moving through a capillary in single file. Erythrocytes (red blood cells) moving through a capillary in single file.
Sickle cells in a ¬capillary. Sickle cells in a ¬capillary.
Performing a Capillary Puncture (Manual) Performing a Capillary Puncture (Manual)
Performing a Capillary Puncture (Manual) Performing a Capillary Puncture (Manual)
Performing a Capillary Puncture (Manual) Performing a Capillary Puncture (Manual)
Exchange of gases between lungs and blood. High concentration of CO2 in blood capillary entering the ... Exchange of gases between lungs and blood. High concentration of CO2 in blood capillary entering the ...
Video: Four Giant Convection Cells oF Earth

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