“…Kashyap, ). In fish, the morphology of cardiomyocytes of the spongy and compact myocardium is alike (Di Maio & Block, ), but similar comparisons have not been made in reptiles and possible functional differences remain to be studied (Galli & Shiels, ). The compact layers are supplied with blood from coronary arteries (see Section II.6), whereas the spongy part, as in all other ectothermic vertebrates, is bathed in the blood returning to the heart (Benninghoff, ; Ošťádal, Rychter & Poupa, ; Kashyap, ; Poupa, ; Pieperhoff, Bennett & Farrell, ; Jensen et al , 2010 a, c ).…”