Latex-injected mouse heart. (IMAGE) University of Tokyo Caption The photo and illustration show key features of an amniote heart, in this case from the fetus of a mouse. The coronary arteries (in orange in the illustration) surround the ventricles of the heart. Credit 2023, Mizukami et al. Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.