This figure is taken from Tortora's Principles of Anatomy and Physiology. (I cannot remember which edition.)
At this point I am beginning to run out of things to say about figures depicting the human circulation. Fortunately the reason I am posting these figures is to illustrate how illustrations (pun intended) can differ even when depicting the same thing. One must consider the intentions of the person in charge of producing the book and what their motivating factors were. It is not just a matter of 'presenting the facts'. Facts are always interpreted.
