mesocardium

American  

[mez-uh-kahr-dee-uhm, mes-, mee-zuh-, -suh-] / ˌmɛz əˈkɑr di əm, ˌmɛs-, ˌmi zə-, -sə- /

noun

Embryology.

PLURAL

mesocardia

1. the double layer of splanchnic mesoderm supporting the embryonic heart.

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Etymology

Origin of mesocardium

meso- + -cardium

Example Sentences

Originally the mesocardium runs the whole length of the pericardium from before backward, but later on the middle part becomes obliterated, and so the two separate reflections from the parietal to the visceral layer, already noticed, are accounted for.

From Project Gutenberg

The two primitive aortae lie at first in the ventral wall of the 644 pericardium, but with the folding over they come to lie in the dorsal wall and gradually bulge into the cavity as they coalesce to form the heart, so that the heart drops into the dorsal side of the pericardium and draws down a fold of the membrane called the dorsal mesocardium.

From Project Gutenberg

A thin membrane, standing vertically in the middle plane, the mesocardium, connects the ventral wall of the head-gut with the lower head-wall.

From Project Gutenberg

For a short time it is still connected with the former by the thin plate of the mesocardium.

From Project Gutenberg