part of part of in taxon results in development of heart development tissue development anatomical structure development cardiac jelly development heart cardiac jelly development rl 2016-03-23T13:17:59Z The process whose specific outcome is the progression of cardiac jelly over time, from its formation to the mature structure. The cardiac jelly is an acellular gelatinous matrix secreted by the myocardium and plays a central role in the septation of the heart. GO:1905072 Vertebrata <vertebrates> cardiac jelly