3 Questions
What is the function of the trophoblastic lacuna in the development of the blastocyst?
They establish the uteroplacental circulation
What is the significance of the appearance of extraembryonic mesoderm in embryonic development?
It forms the extraembryonic coelom or chorionic cavity
What happens to the cells of the endometrium during the beginning of decidua reaction?
They become loaded with glycogen and lipids
Study Notes
- Describes the development of a blastocyst.
- Forms the lining of the exocoelomic cavity or primitive yolk sac.
- Trophoblastic lacuna are more developed at embryonic pole.
- Establishes the uteroplacental circulation.
- Appearance of extraembryonic mesoderm.
- Forms a space known as the extraembryonic coelom or chorionic cavity.
- Growth of the bilaminar disc is relatively slow.
- The disc remains very small.
- Beginning of decidua reaction.
- Cells of the endometrium become pd al and loaded with glycogen and lipids.
Test your knowledge on the early stages of embryonic development with this quiz. From the formation of the blastocyst to the establishment of the uteroplacental circulation, this quiz covers it all. Learn about the extraembryonic mesoderm, chorionic cavity, and bilaminar disc as well as the beginning of the decidua reaction. Put your understanding to the test with this informative quiz.
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