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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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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

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The FDA recognizes 118 routes of administration.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

The conduction system of the heart; traces the path of the electrical impulse that stimulates the he The conduction system of the heart; traces the path of the electrical impulse that stimulates the he
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Urinary system. Urinary system.
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Part A - Overview of the vertebrate nervous system Part A - Overview of the vertebrate nervous system
Fine motor skills involve coordinating the many small muscles of the wrists, hands, and fingers. Fine motor skills involve coordinating the many small muscles of the wrists, hands, and fingers.
Video: DNA close up Animation

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