# The Naked Scientists Forum

### Author Topic: How long does it take blood to do a full body circuit?  (Read 9028 times)

#### thedoc

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##### How long does it take blood to do a full body circuit?
« on: 03/10/2013 21:47:19 »
How long does it take a drop of blood to do a full circuit of the system?
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« Last Edit: 03/10/2013 21:47:19 by _system »

#### Lmnre

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##### Re: How long does it take a drop of blood to do a full circuit of the system?
« Reply #1 on: 29/04/2012 21:03:59 »
The time that I've consistently seen is about 20 seconds.

#### RD

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##### Re: How long does it take a drop of blood to do a full circuit of the system?
« Reply #2 on: 29/04/2012 21:30:44 »
Depends what route it takes and how active the person is at the time.

but total blood volume is ~5 liters, flow rate in aorta at rest is ~100cm3 per second: 5000/100 = 50 seconds

#### Nizzle

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##### Re: How long does it take a drop of blood to do a full circuit of the system?
« Reply #3 on: 30/04/2012 11:53:36 »
Depends what route it takes and how active the person is at the time.

but total blood volume is ~5 liters, flow rate in aorta at rest is ~100cm3 per second: 5000/100 = 50 seconds

Indeed. The travel time is affected by route. All blood goes from heart -> lungs -> heart -> body -> heart -> lungs....
Now if the body portion of the route is your foot, it'll take longer to circulate compared to the body portion of the route being your coronary arteries.

#### Seth

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« Reply #4 on: 04/04/2014 05:27:38 »
What!!!

#### The Naked Scientists Forum

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« Reply #4 on: 04/04/2014 05:27:38 »