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Questions and Answers
What happens on Day 13 of embryonic development?
What is the buccopharyngeal membrane?
What is the decidua reaction?
Study Notes
- Day 11-12: growth of bilaminar disc is slow, decidua reaction begins
- Day 13: endometrial defect at implantation site heals, trophoblast primary villi appear
- Appearance of secondary yolk sac and chorionic cavity/plate
- Appearance of buccopharyngeal membrane at cephalic region of embryo
- Disc remains very small (0.1 to 0.2 mm)
- Cells of endometrium become polyhedral and loaded with glycogen and lipids
- Intercellular spaces are filled with extravasate, and tissue is edematous
- Decidua reaction occurs throughout endometrium
- Exocoelomic cavity present
- Cellular columns surrounded by syncytium form in trophoblast primary villi
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Description
Test your knowledge on the early stages of embryonic development with this quiz! From the growth of the bilaminar disc to the appearance of the buccopharyngeal membrane, this quiz covers key milestones in the first few weeks of pregnancy. Challenge yourself to recall the details of the decidua reaction, trophoblast primary villi, and more. If you're interested in reproductive biology or planning to become a healthcare professional, this quiz is a great way to sharpen your knowledge.
