During development of the heart, the orifice of the sinus venosus lies obliquely, and is guarded by two valves, the right and left venous valves; above the opening these unite with each other and are continuous with a fold named the septum spurium.
| Septum spurium | |
|---|---|
 | |
 Interior of dorsal half of heart of human embryo of about thirty-five days. (Septum spurium labeled at upper left.) | |
| Anatomical terminology |
References
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This article incorporates text in the public domain from page 510 of the 20th edition of Gray's Anatomy (1918)
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