Circulation of a Frog Small 185×320 Medium 370×640 Large 592×1024 Download Tiff Original 1388×2400 | (464.4 KB) Description A diagram of the circulation of a frog. Labels: 1, The pericardium. 2, The single ventricle. 3, The right auricle. 4, The left auricle. The arrows indicate the direction of the blood. Keywords "circulatory system", circulation, frog, heart Galleries Amphibian Anatomy Source: Cutter, Calvin First Book on Analytic Anatomy, Physiology and Hygiene, Human and Comparative (Philadelphia: J. B. Lippincott & Co., 1875) 128
