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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.
In 1864, the first barbiturate (barbituric acid) was synthesized.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.