At 23:26 -0500 02/03/19, kilopascal wrote:
>2002-03-19
>
>Just a guess, but I would say it is greater.  Even though atmospheric
>pressure is 760 mmHg, the 130/80 mmHg is relative to the 760 mm.  It is
>130/80 greater that 760 mm.  It is what is known as gage pressure, not
>absolute.  If it were an absolute pressure, it would be 890/840 mmHg.  If it
>were less, wouldn't the pressure of the air restrict your blood flow?


Indeed, this famous "blood pressure" is a "blood pressure drop", i.e. 
the pressure generated by the flow of liquid in small diameter pipes 
(arteries) and measured not too far from the "pump" (the heart).

Am I right ?

Louis

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