An nonvascular extraembryonic basement membrane that forms on the inner surface of the trophectoderm during placenta morphogenesis and is secreted by the distal parietal endoderm; required for the maternofetal exchange of nutrients and is important for the postgastrulation development[MP]. a thick multilayered basement membrane between the parietal endoderm cells and the trophoblast cells. [ MP:0003954 http://dx.doi.org/10.1007/BF00184752 ]
Term information
Term relations
- membranous layer
- composed primarily of some basement membrane
- part of some entire extraembryonic component
- develops from some parietal endoderm
- surrounded by some trophoblast
- has part some basement membrane
- surrounded by some endoderm