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Atlas of Human Embryos Chapter   Figure
 <   >  search results: trophoblastic layer Search   Fig. 2-3 Fig. 2-5 Fig. 2-6-1 Fig. 3-1

amnion, amniotic cavity, chorion, chorionic cavity, connecting stalk, decidual reaction, embryonic disc, endometrial stroma, exocoelomic cyst, extra-embryonic coelom, secondary umbilical vesicle, secondary umbilical vesicle cavity, secondary villus, trophoblast lacunae, trophoblastic layer, uterine gland

A section through the middle of the 13-day embryo showing the relation of the embryo to the surrounding endometrium and trophoblastic layer and lacunae.

The 13-day embryo with secondary villi (early trilaminar blastocyst)
Stage 6
Age 13 days
Carnegie collection 7801

Heuser et al., 1945.


Keywords: amnion, amniotic cavity, chorion, chorionic cavity, connecting stalk, decidual reaction, embryonic disc, endometrial stroma, exocoelomic cyst, extra-embryonic coelom, secondary umbilical vesicle, secondary umbilical vesicle cavity, secondary villus, trophoblast lacunae, trophoblastic layer, uterine gland

Source: Atlas of Human Embryos.