Let’s face it: most of us have had difficulty drawing a heart diagram in school ... He didn’t stop there and went on to describe the functions of the heart in relation to the girls.

Cardiac output can be calculated using the following equation: Stroke volume close stroke volumeThe volume of blood pumped from the heart with each beat. is the volume of blood pumped out of each ...

Save guides, add subjects and pick up where you left off with your BBC account. Your heart first pumps blood to your lungs. Here, the blood picks up oxygen from the air that you have breathed in.