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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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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

The endocrine control of spermatogenesis. The endocrine control of spermatogenesis.
Primary production is constrained by the most limiting factor. Primary production is constrained by the most limiting factor.
Primary steps in fibrinolysis. Primary steps in fibrinolysis.
An H-bridge circuit is used to control the direction of the DC electric motor of the electronic ... An H-bridge circuit is used to control the direction of the DC electric motor of the electronic ...
Human of the planet's net primary production and appropriation of NPP Human of the planet's net primary production and appropriation of NPP
Hormonal control over male and female reproductive hormones Hormonal control over male and female reproductive hormones
Video: Muscle Fatigue and Recovery

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