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Author Question: Approximately 10,000 years ago humans experienced a dramatic change in their social structure ... (Read 21 times) |
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.
Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
In 1864, the first barbiturate (barbituric acid) was synthesized.