Flashcards in Embryology Deck (24):
What is a morula?
Solid ball of cells
Leber's hereditary optic neuropathy is an example of what?
What makes up a blastocyst?
Inner cell mass
The trophoblast forms what for implantation?
What does the chorion do?
Implantation (chorionic villi)
Secretes human Chorionic gonadatrophin
What happens to the inner cell mass of the trophoblast?
What are the functions of the placenta?
Transport of waste and gases
What forms the maternal part of the placenta?
Decidua basalis of the endometrium
What forms in the centre of the epiblast?
Primitive streak (invagination of cells)
The epiblast displaces what and forms what?
Displaces the hypoblast
Forms the germ layers
What is the first thing the ectoderm forms?
What does the notochord induce?
Sinking of the neural plate to form a neural tube
What does the neural tube induce?
Thickening of the mesoderm and separation
What does the mesoderm separate into?
Intermediate plate mesoderm
Lateral plate mesoderm
What does the lateral plate mesoderm split into?
What does the paraxial mesoderm form?
What does the intermediate plate mesoderm form?
Neurolation forms what?
43 pairs of somites in paraxial mesoderm
The endoderm forms what?
The somites divide into what?
Dermatome (dermis of skin)
What does ToRCH stand for?
Where is the risk of teratogenesis greatest?
How is a prenatal diagnosis of congenital disorders made?
Blood - AFP
Ultrasound (12 weeks)