The extracellular matrix between the myocardium and the endocardium. The cardiac jelly plays a central role in the septation of the heart and comprises most of the thickness of the heart wall at early stages, but disappears as the heart differentiates.
hog:0000938 left atrium cardiac jellyhog:0000939 right atrium cardiac jellyhog:0000940 outflow tract cardiac jellyhog:0000941 atrium cardiac jellyhog:0000943 ventricle cardiac jellyBFO:0000050 part of
hog:0000276
tao:0001318