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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.
Did you know?
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.