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Questions and Answers
During the 9th to 10th days of development, which structure forms a membrane known as exocoelomic membrane or Heuser’s membrane?
During the 9th to 10th days of development, which structure forms a membrane known as exocoelomic membrane or Heuser’s membrane?
- Hypoblast cells (correct)
- Endometrial stroma
- Trophoblastic lacunae
- Syncytium vacuoles
What role does the extraembryonic mesoderm play during the 11th to 12th days of development?
What role does the extraembryonic mesoderm play during the 11th to 12th days of development?
- Forms the lining of the exocoelomic cavity (correct)
- Creates the trophoblastic lacunae
- Contributes to the formation of endometrial stroma
- Develops into the syncytium vacuoles
What characterizes the trophoblast during the 11th to 12th days of development?
What characterizes the trophoblast during the 11th to 12th days of development?
- Formation of large syncytial lacunae in the ab-embryonic pole
- Conversion into embryonic mesoderm
- Complete absence of lacunar spaces
- Continued presence of cytotrophoblastic cells in the ab-embryonic pole (correct)
