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Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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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.

Palpation of Lymph Nodes, Anterior Cervical Chain Palpation of Lymph Nodes, Anterior Cervical Chain
Photo of the neck of a patient with non-Hodgkin’s lymphoma showing the swelling associated with enla Photo of the neck of a patient with non-Hodgkin’s lymphoma showing the swelling associated with enla
lymph nodes lymph nodes
The lymphatic system. The lymphatic system.
Relationship of the lymphatic system to the cardiovascular system. Relationship of the lymphatic system to the cardiovascular system.
Main lymph nodes of the leg Main lymph nodes of the leg
Video: Role of the urinary system - acidosis and alkalosis

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