Podcast
Questions and Answers
What is the first stage after fertilization where a blastocyst forms?
What is the first stage after fertilization where a blastocyst forms?
- Lacunae formation
- Implantation
- Trophoblast proliferation
- Cleavage (correct)
During implantation, what is the role of syncytiotrophoblast?
During implantation, what is the role of syncytiotrophoblast?
- Forms the inner mononucleated cytotrophoblast layer
- Differentiates into syncytiotrophoblasts
- Secretes proteolytic enzymes for invasion (correct)
- Allows blastocyst to embed in the endometrium
What type of cells form the outer layer during implantation?
What type of cells form the outer layer during implantation?
- Glands
- Maternal blood vessels
- Syncytiotrophoblasts (correct)
- Cytotrophoblasts
Which structure becomes filled with maternal blood during the post-implantation stage?
Which structure becomes filled with maternal blood during the post-implantation stage?
What happens to cytotrophoblasts during implantation?
What happens to cytotrophoblasts during implantation?
Which stage marks the beginning of placental development during pregnancy?
Which stage marks the beginning of placental development during pregnancy?
What type of villi are formed when extraembryonic mesoderm enters the projections formed by cytotrophoblasts in the third week of development?
What type of villi are formed when extraembryonic mesoderm enters the projections formed by cytotrophoblasts in the third week of development?
What is the role of extravillous invading trophoblasts in placental development?
What is the role of extravillous invading trophoblasts in placental development?
In fetal circulation, what is the role of maternal veins?
In fetal circulation, what is the role of maternal veins?
What is the main function of placental circulation in relation to oxygen and nutrients?
What is the main function of placental circulation in relation to oxygen and nutrients?
How do extraviilous invading trophoblasts contribute to maternal blood flow into the intervillous space?
How do extraviilous invading trophoblasts contribute to maternal blood flow into the intervillous space?
What is a potential consequence of inadequate trophoblast invasion of spiral arteries during pregnancy?
What is a potential consequence of inadequate trophoblast invasion of spiral arteries during pregnancy?
