<embryology> 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)

mesobronchium, mesocaecal, mesocaecum, mesocardia < Prev | Next > mesocarp, mesocarpal, mesocaval shunt

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