Question

mesenchymal cells which form the endocardium are called ​

Answer 1

Explanation:

These migrated cells form the "swellings" called the endocardial cushions seen in the heart tube. Upon sectioning of the heart the atrioventricular endocardial cushions can be observed in the lumen of the atrial canal as two thickenings, one on its dorsal and another on its ventral wall

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