What do you know about the Bilaminar Embryo? The two-layered embryo describes the inner cell mass separating to form an initial two-layered structure. In human development, this occurs during the second week. The epiblast layer will then develop most of the embryo. Recreating the human embryo at implantation is essential for a successful pregnancy. This fascinating quiz will explain to you about the bilaminar embryo.
Fallopian tubes
Abdomen
Placenta
Cervix
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Day 11
Day 3
Day 24
Day 5
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2 sets of paternal chromosomes
2 sets of maternal chromosomes
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Vessels in the extraembryonic mesoderm of chorion and connecting stalk
Cytotrophoblasts creating long vessels
Syncytiotrophoblasts lining long vessels
Primary stem villi
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Implantation of zygote occurs in the internal os of cervix
Implantation of zygote in Fallopian tubes
Complete blockage of vaginal opening due to disorganized mass of placental derivatives
Severe abdominal pain
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Day 8
Day 2
Day 15
Day 14
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A multinucleated mass of cytoplasm resulting from the fusion of mononucleated cells
The formation of a hard mass of trophoblasts due to only paternal DNA present in zygote after fertilization
Layer of mitotically active cells that line the embryoblast and blastocystic cavity
A protein that facilitates the migration of the blastocyst through the uterine epithelium
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Day 11
Day 35
Day 4
Day 7
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Extraembryonic splanchnopleuric mesoderm
Liver
Bone marrow
Proximal ends of long bones
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Gives rise to embryo
Forms amniotic membrane
Secretes hCG and progesterone to maintain placenta
To penetrate through the Fallopian tubes in order to implant into the uterus
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Uterine damage caused by inflammation due to PID
Ectopic pregnancies are spontaneous, random events
Implantation of zygote in uterus
Previous Cesarean sections
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Dispermy
Dipliody
2 sets of chromosomes of maternal origin
Methotrexate
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Cells become long, spindle shaped cells with invasive motility
Cells become columnar to prepare for secretion of hormones
Cells become cuboidal in order to create a protective lining for the developing embryo
Cells become endothelial cells to line the newly forming placental blood vessels
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Trophoblast cells
Syncytiotrophoblast cells
Blastocyst cells
Hypoblast cells
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Liver
Extraembryonic splanchnopleuric mesoderm
Bone marrow
Distal ends of long bones
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Week 3
Week 1
Week 2
Week 4
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Integrin proteins
Extracellular matrix proteins
Microvilli
Proteases
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Pinopodes
Microvilli
Sterocilia
Pseudopodes
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Extraembryonic somatopleuric mesoderm
Cytotrophoblast
Syncytiotrophoblast
Connecting stalk
Extraembryonic splanchnopleuric mesoderm
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Vimentin
N-cadherin
E-cadherin
Desmoplakin
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Extraembryonic endoderm
Splanchnopleuric mesoderm
Exocoelomic cysts
Hypoblast cells
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Exocoelomic membrane
Mesenchymal cells
Extraembryonic endoderm
Extraembryonic membrane
Somatopleuric cells
Syncytiotrophoblast cells
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