Drosophila Heart Muscle (image) American Society for Biochemistry and Molecular Biology Share Print E-Mail Caption The attached image shows the larval heart from Drosophila on which many of the experiments were done. The arrows point to the walls of the heart. The upper frame shows the heart in its dilated form and the lower frame shows the heart after contraction. Credit Satpal Singh Usage Restrictions None Share Print E-Mail 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.