![](/drem/stage5c/labels2/S41L.gif)
![chorionic cavity, extra-embryonic reticulum, lacunar vascular circle](/drem/stage5c/Z0/S41N.jpg)
![](/drem/rulerbg.png)
0 μm
Carnegie Embryo #7700 | Location: 05-03-08
Keywords: chorionic cavity, extra-embryonic reticulum, lacunar vascular circle
Source: The Virtual Human Embryo.
Keywords: chorionic cavity, extra-embryonic reticulum, lacunar vascular circle
Source: The Virtual Human Embryo.