A medical illustration from 'Quain's Elements of Anatomy, Eighth Edition, Vol.II' (by William Sharpey MD, LLD, FRS L&E, Allen Thomson, MD, LLD, FRS L&E, and Edward Albert Schafer) depicts the view of the base of the ventricular part of the heart, 1876. Visible is the relative position of the arterial and auriculo-ventricular orifices(Photo by VintageMedStock/Getty Images)
