Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Fluid compartments in a typical vertebrate.
Typical Organization of the CPT Manual
Coolant flow through a typical engine cooling system.
A typical solenoid-operated starter.
Some typical electroencephalograms and their psychological correlates
Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan