Heart of human embryo of about fourteen days.
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| colspan="2" |Interior of dorsal half of heart from a human embryo of about thirty days.
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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"|[11]
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|Days
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|Precursor
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|Gives rise to
|colspan="2"|right ventricle, left ventricle
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|MeSH
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|Dorlands/Elsevier
|colspan="2"|[/]
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The primitive ventricle becomes divided by a septum, the septum inferius or ventricular septum, which grows upward from the lower part of the ventricle, its position being indicated on the surface of the heart by a furrow.
Its dorsal part increases more rapidly than its ventral portion, and fuses with the dorsal part of the septum intermedium.
For a time an interventricular foramen exists above its ventral portion, but this foramen is ultimately closed by the fusion of the aortic septum with the ventricular septum.
