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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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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

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Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

These species are all at risk of extinction. Species with slow life-h These species are all at risk of extinction. Species with slow life-h
Explaining “Moving Continents”— The Theory of Plate Tectonics Explaining “Moving Continents”— The Theory of Plate Tectonics
Lightly squeeze along each finger applying pressure first near the knuckle and then moving along the ... Lightly squeeze along each finger applying pressure first near the knuckle and then moving along the ...
Cover heat source to slow cooling by placing a towel over it. Cover heat source to slow cooling by placing a towel over it.
Apply lotion to the entire hand and arm, moving up the arm from hand to shoulder. Use moderate ... Apply lotion to the entire hand and arm, moving up the arm from hand to shoulder. Use moderate ...
Gently press and roll the arm between your two hands, lightly mobilizing the shoulder and elbow ... Gently press and roll the arm between your two hands, lightly mobilizing the shoulder and elbow ...
Video: Premenstrual Syndrome

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