Originally Posted by
Latitude65
Absolutely, that is what I said, but in layman's language. The heart only has two tools to work with Rate and Pressure.
In what way is blood pressure equivalent to stroke volume? It should be obvious that the two are different just by looking at the units. The first is measured in force per unit area and the second as volume or length cubed.
Think of it this way, keep heart rate and stroke volume the same - will the amount of blood circulating change with the elasticity of the heart or diameter of the aorta?