Neuro Peds - 01 - Prenatal Development Flashcards
What is the duration of the germinal period?
1-2 wks
What is the duration of the embryonic period?
3-8 wks
What is the duration of the fetal period?
9-40 wks
What counts as a full term fetus?
36-40 wks
Where does fertilization take place?
in the fallopian tube
When does the ovum become the blastocyst?
First, the zygote becomes a solid ball of cells.
Then it becomes a hollow ball of cells called a blastocyst.
What are the three layers of the Neural Tube?
Ectoderm
Mesoderm
Endoderm
What does the Ectoderm form?
skin nervous system hair brain spinal cord nerve cells pigment cells
what does the Mesdoderm form?
dermis, skeleton, muscle, blood and blood vessels, urogenital system
What does the Endoderm form?
epithelial linings and glands
digestive and respiratory organs
When does the neural tube begin to form?
at 18 days
when is the Neural Tube completely formed?
at 22 days
Why should mother take folic acid?
to help the neural tube form
When do arms and legs form?
4th and 5th weeks
By which week are all the organs of the fetus functioning?
8th week
