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Embryonic Development Day 8

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Questions and Answers

What is the outer layer of the trophoblast that has no distinct cell boundaries?

Epiblast
Syncytiotrophoblast (correct)
Hypoblast
Cytotrophoblast

Where are mitotic figures found in the trophoblast?

Cytotrophoblast (correct)
Epiblast
Hypoblast
Syncytiotrophoblast

What is the layer of cells adjacent to the blastocyst cavity?

Hypoblast layer (correct)
Epiblast layer
Cytotrophoblast layer
Syncytiotrophoblast layer

What is the characteristic of the endometrial stroma adjacent to the implantation site?

It is highly vascular and edematous (A) Signup and view all the answers

What is the cavity that forms within the epiblast?

Amniotic cavity (B) Signup and view all the answers

What is the stage of trophoblast development characterized by the formation of large lacunae?

Lacunar stage (B) Signup and view all the answers

What is the membrane formed by flattened cells from the hypoblast that lines the inner surface of the cytotrophoblast?

Exocoelomic membrane (C) Signup and view all the answers

What is the term for the space that forms when the cavities in the extraembryonic mesoderm become confluent?

Chorionic cavity (B) Signup and view all the answers

What is the term for the maternal blood vessels that are congested and dilated and are eroded by the syncytiotrophoblast?

Sinusoids (D) Signup and view all the answers

What is the term for the circulation established when maternal blood flows through the trophoblastic system?

Uteroplacental circulation (D) Signup and view all the answers