Richard Almand asked:
How long does it take a drop of blood to do a full circuit of the system?
Cheers, I love listening to your show.
Richard Almand (from New Zealand)
Diana - I think the answer is going to be about a minute for most people.
You have about 5 litres of blood in your body (at least most people do) and the average heart pumps about 70 ml of blood out with each beat.
The next bit is going to depend on your resting heart rate.
I think most people have an average resting heart rate of about 70 beats a minute (somewhere around there). So, if you multiply the amount of blood that the heart can pump by the number of beats in a minute, you actually get about 4.9 litres of blood, which is almost your whole body’s worth of blood.
So, in a minute, you will pump the entire blood volume around your body.
The time that I've consistently seen is about 20 seconds. Lmnre, Sun, 29th Apr 2012
Depends what route it takes and how active the person is at the time.
What!!! Seth, Fri, 4th Apr 2014