Medical Definition of Mesocardium
1.
The double layer of splanchnic mesoderm supporting the embryonic heart in the pericardial cavity. It disappears before birth.
Dorsal mesocardium, the part of the mesocardium dorsal to the embryonic heart; it breaks down to form the transverse sinus of the pericardium.
Ventral mesocardium, the part of the mesocardium ventral to the embryonic cardiac tube; transitory in all vertebrates; in the higher mammals, it breaks through as soon as its component layers of epicardium make contact with each other.
Origin: meso-+ G. Kardia, heart
(05 Mar 2000)
Lexicographical Neighbors of Mesocardium
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