Biology Asked by Sudipto Sarker on December 7, 2020
Is there any certain amount of pressure difference between our blood pressure and barometric pressure when blood of our body begins to come out?
Blood pressure is the pressure above barometric pressure. When you pump up a blood pressure cuff, or a tire for that matter, you don't have a gauge with a line at 760 torr / mmHg; you're measuring the pressure relative to the air in the room.
Note that blood pressure is only 16% of normal atmospheric pressure. Imagine what your blood pressure would be if you were the victim of explosive decompression in outer space!
Answered by Mike Serfas on December 7, 2020
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