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Author Question: The spontaneous loss of a pregnancy prior to 20 weeks' gestation is called a spontaneous ________ or ... (Read 49 times) |
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
The human body produces and destroys 15 million blood cells every second.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.