Question

When
CARDIAC OUTPUT increases, HEART RATE increases
Therefore what happens to STROKE VOLUME??

Answer 1

Cardiac Output (CO) = Heart Rate(HR) x Stroke Volume(SV)
CO is really how much blood (in vol) you pump out per unit of time
HR is how fast you are pumping per unit of time
SV is how much volume you pump during each pump.
Given that what do you think?

Answer 2

no stroke volume ? @1DEA

Answer 3

well think about your own heart. Do you think your heart ever pumps 0 blood?

Answer 4

and besides looking the equation I gave you if SV is 0 it would make your CO 0 and that only happens when you are dead, but even when you are dead, unless you have a very special (and by special, I basically mean impossible) form of hyperplasia of the heart, your SV will always be > 0. Basically when you die your HR is thing that becomes 0, which is why they use it to determine time of death.

Answer 5

I'll reiterate, SV, aka stroke volume is how much blood your heart pumps in one pump. So how do you think that changes when you let's say going out for a run? Which btw is one way to see an increase in the CO.

Answer 6

@1DEA I like your name.......no homo

Answer 7

thanks :)