Diagram of Fetal Circulation
Plan of fetal circulation. In this plan, the figured arrows represent the kind of blood, as well as the direction which it takes in the vessels. Thus, arterial blood is figured ..... ; venous blood ----; mixed (arterial and venous) -...- .
Kimber, Diana C. Anatomy and Physiology for Nurses (New York, NY: The Macmillan Company, 1907)