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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?
Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.