Some weeks ago, at the lab, the teacher brought a cow’s heart for us to dissect. The first thing we did was cutting it open and spotting the coronary arteries, the pulmonary artery, the valves, the vena cava, the aorta, the pulmonary vein, the ventricles and the atria. Then, we were able to cut it through the septum without rupturing any tendon. Once we had the two halves, we analysed them in depth and made a biological drawing.

In our last Biology classes we have been working on ECGs. These are the notes I’ve taken on how they work:

ECGs