7.3.4 - Calculating Cardiac Output

Question 1

What Is Cardiac Output?
(2 Points)

Answer 1

~ Total volume of blood pumped by a ventricle every minute.

~ Increases when an individual is exercising, due to higher heart rates and stroke volumes.

Question 2

Why Do Fitter Individuals Often Have Higher Cardiac Outputs?

Answer 2

They have thicker and stronger ventricular muscles in their hearts.

Question 3

How Is Cardiac Output (cm3min-1) Calculated?

Answer 3

Heart Rate (BPM) x Stroke Volume (cm3)

Question 4

What Is Stroke Volume?

Answer 4

Volume of blood pumped out of the left ventricle, during one cardiac cycle.