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Section 42-2-5

The caudal end of embryo No. 7802, stage 7. A detached portion of the allantoic diverticulum can be seen above. Further ventrally, the caudal end of the amniotic cavity is evident, and the clump of cells in and on its ventral aspect represents the primordium of the cloacal membrane. The umbilical vesicle is readily visible in the lower half of the photomicrograph. Section 42-2-5.

Fig. 7-12. O'Rahilly and Müller, 1987.

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Keywords: allantoic diverticulum, amniotic cavity, cloacal membrane, umbilical vesicle

Source: The Virtual Human Embryo.