Figure 3. Absolute (mm³) and relative (%) myocardial volumes of cardiac compartments rendered from 3D reconstructions.

Myocardial volume of the ventricle and the atria increases exponentially. Neither the conus nor the atrioventricular canal changes substantially in size and come to contribute only miniscule proportions to the fully formed hearts represented by 150 days for the corn snake (3 months post hatching) and ‘Adult’ for the anoles (the mm³ values for the adult anole are written onto the graph).