Figure 23.26 The general pattern of fetal circulation is shown schematically.
Flow arrrows are shown in gray so as not to be confused with blood oxygenation.

Source: Shier, D., Butler, J., & Lewis, R. (2010). HOLE’s human anatomy & physiolog (12th ed.). [McGraw-Hill’s Connect - Ebook]. Retrieved from http://connect.mcgraw-hill.com/connect/hmEBook.do?setTab=sectionTabs