The embryonic disc of No. 7801, in the region of the primitive streak. the connecting stalk, the amniotic cavity, and the umbilical vesicle are also visible. Section 12-3-6.
Fig. 6-10. O'Rahilly and Müller, 1987.
Keywords: amniotic cavity, connecting stalk, embryonic disc, primitive streak, umbilical vesicle
Source: The Virtual Human Embryo.