Part of the trophoblast from the lateral (equatorial) aspect of the embryo, to show the "brush border" lining the lacunar spaces of the syncytiotrophoblast. The small capillary on the right connects the lacunar spaces of the trophoblast with the nearby arteriovenous sinusoids.
Fig. 31. Hertig and Rock, 1941.
Keywords: arteriovenous sinusoid, brush border, embryo, lacunar spaces of syncytiotrophoblast, lacunar spaces of trophoblast, trophoblast
Source: The Virtual Human Embryo.