How is the heart formed in the embryo?

Answer 1

In mesoderm withing the trilaminar embryonic disc is when the heart begins to form. In the embronic disc is a paired tube inside the pericardial cavity that is being created. When the disc folds it gets carried into the correct place in the chest cavity. Here is an extra resource if you would like to read more. https://embryology.med.unsw.edu.au/embryology/index.php/Cardiovascular_System_-_Heart_Development