During exercise, the cardiovascular system must supply muscles with large amounts of oxygen and fuel and get rid of a lot of wastes. How do the cardiovascular systems of athletes respond to prolonged exercise? Researchers have also observed that athletes and non-athletes have the same mean resting cardiac output, even though athletes have a far lower resting heart rate. How is this possible?

Video transcript

Hello everyone here. We have a question asking. The volume of blood pumped by a single ventricle contraction is called blank. We have a heart rate. Heart rate is heart beats per minute. B stroke volume stroke volume is the volume of blood pumped by a single ventricle contraction. So B is our answer. But let's look at our other two options. We have C cardiac output. Cardiac output is the volume of blood per minute that is pumped by each of the ventricles. And lastly we have tidal volume, tidal volume is the volume of air inhaled and exhaled with each breath. So our answer here is B stroke volume. Thank you for watching. Bye.