The human engine functions by the grace of its own pumping; it does not work like a mechanical engine, were the aggregate is a separate machine in a system set up. The hart as a member of the system has to obtain its own energy out of the 'petrol' system klinging around this pump, the arteries filled with oxygen.
In an automobile it would be like the engine was stocked with tiny carburators around it, to make the the whole engine work as a combination of thousands of little engines and carburators. These smaller parts all together would combine in all their special tasks to let the engine work as one machine. If there would be a failure in providing petrol to these carburators, parts of the engine would stop, with disastrous consequences. The petrolprovision in my system failed on a critical spot, just at the branche of the petrol line. So artificial plumbery was needed after doing some essential bodywork on my hood.
After the main repair some changes in the engine run can be felt: in idle run I can feel my heart beat like a boxer engine. By opening the heart arteries, the mechanics had to open the pericard bag around the heart. That bag is normally filled with fluid to protect the heart. This mantle also silences the sound and the beats of the beating heart. Now this silencer is broke, it feels like my engine runs without struts. Like an idle running boxer of the 33.
(very angry)