Greta Donisi Pecchiari Lesson 11 - 23/03/2015 Mechanical coupling between the heart and the vessels this man here is Guyton, the author of the book. (slide 1, above) What you see here is an electrical circuit consis<ng in a model of several systems in our body. At the <mes of Guyton, personal computers were not widely available and the easiest thing to do if you want to simulate something was to build an electrical circuit analog to the system of your interest. And therefore he made this.Today we are going to study a small part of it. Page 1