Skip Navigation
Stage 1 / 1 day Stage 2 / 2-3 days Stage 3-1 / 4 days Stage 3-2 / 4-5 days Stage 4 / 6 days Stage 5a-1 / 7 days Stage 5a-2 / 8 days Stage 5b / 9 days Stage 5c / 12 days Stage 6 / 13-17 days Stage 7 / 16-19 days Stage 8 / 23 days Stage 9 / 25 days Stage 10 / 28 days Stage 11 / 29 days Stage 12 / 30 days Stage 13 / 32 days Stage 14 / 33 days Stage 15 / 36 days Stage 16 / 39 days Stage 17 / 41 days Stage 18 / 44 days Stage 19 / 45-47 days Stage 20 / 49 days Stage 21 / 49-52 days Stage 22 / 52-55 days Stage 23 / 56 days
Atlas of Human Embryos Chapter   Figure
 <   >  search results: embryonic mesoderm Search   Fig. 3-2-1 Fig. 3-2-3 Fig. 3-2-4 Fig. 3-5-7

amniotic cavity, cloacal membrane, embryonic ectoderm, embryonic endoderm, embryonic mesoderm, extra-embryonic mesoblast, umbilical vesicle cavity

A section through the cranial part of the cloacal membrane.

Observe:
1. The union of ectoderm and endoderm forming the cloacal membrane.
2. The more laterally situated mesoderm, which is continuous with the extraembryonic mesoblast.


Keywords: amniotic cavity, cloacal membrane, embryonic ectoderm, embryonic endoderm, embryonic mesoderm, extra-embryonic mesoblast, umbilical vesicle cavity

Source: Atlas of Human Embryos.