Nerves of the Heart of a Frog Small 237×320 Medium 475×640 Large 760×1024 Download Tiff Original 1781×2400 | (1.1 MB) Description Course of the nerves in the auricular partition wall of the heart of a frog. Labels: d, dorsal branch; v, ventral branch. Keywords frog heart Galleries Amphibian Anatomy Source: Baker, W. Morrant & Harris, Vincent Dormer Kirkes' Hand-book of Physiology, 13th ed. (Philadelphia: P. Blakiston's Son & Co., 1892) 240