Fill the 2 missing blanks
The zona pellucida dissolves, and the blastula is bathed in nutritive uterine cells. The outer layer of the trophoblast will become the ______?________ and the _______?________; the inner cell mass becomes the epiblast.The placenta is formed from a combination of the uterine and embryonic tissue, which will enable the fetus to acquire nutrients from the mother.
The zona pellucida dissolves, and the blastula is bathed in nutritive uterine cells. The outer layer of the trophoblast will become the ______?________ and the _______?________; the inner cell mass becomes the epiblast.The placenta is formed from a combination of the uterine and embryonic tissue, which will enable the fetus to acquire nutrients from the mother.