Scheme of arrangement of parietal veins.
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| colspan="2" |Human embryo with heart and anterior body-wall removed to show the sinus venosus and its tributaries.
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|Latin
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|
|colspan="2"|[subject #135 ]
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|System
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|Carnegie stage
|colspan="2"|[13]
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|Days
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|Precursor
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|- class="hiddenStructure"
|Gives rise to
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|MeSH
|colspan="2"|[]
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|Dorlands/Elsevier
|colspan="2"|[v_04/12847339]
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During development of the veins, the first indication of a parietal system consists in the appearance of two short transverse veins, the ducts of Cuvier, which open, one on either side, into the sinus venosus. Each of these ducts receives an ascending and descending vein. The ascending veins return the blood from the parietes of the trunk and from the Wolffian bodies, and are called cardinal veins.
