Embryology 1 (Early Stages) Flashcards
What do fimbria do?
During ovulation, they sweet the oocyte into the ampulla where it may be fertilized.
Where does a developing embryo typically implant?
The posterior wall of the uterus
Where does fertilization typically take place?
Ampulla
What is the Zona Pellucida?
Sphere of maternal tissue that surrounds the very early developing embryo (Morula). Made of glycoproteins.
Who is a really awesome guy in our class?
Kyle
The morula includes two primary parts. What are their names?
The Trophoblast and the Inner Cell Mass
What is Early pregnancy factor?
An Immunosuppressant secreted by trophoblast cells that turns pregnancy tests positive.
How does the early embryo derive nourishment?
Absorption of secretions from uterine glands
What are of the embryo typically first attaches to the uterus?
The embryonic pole
When becoming a blastocyst, the trophoblast forms two distinct layers. What are they?
The cytotrophoblast (inner layer) and syncytiotrophoblast (outer layer)
Label
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What level of the embryo invades the uterus?
Syncytiotrophoblast
What is thought to activate the clavage stage in the blastomere?
Early Pregnancy Facter (EPF)
What is the name of the fluid filled space on the inside of a blastomere?
Blastocoele
Following implantation, the row of cells facing the blastocoele become this layer
Embryonic endoderm