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Embryology 3
n/a
17
Dentistry
Undergraduate 3
05/14/2015

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Cards

Term
The notochord initiates the overlying ectoderm to form what?
Definition
The neuroectoderm
Term
What does the neuroectoderm make
Definition
The neural plate
Term
Lateral edges of the neural plate elevate to form what?
Definition
Neural folds
Term
What occurs which forms the neural tube
Definition
Fusion of neural folds at the midline
Term
How does fusion occur
Definition
Starts in the cervical region and continues cranially/caudally
Term
When is neurulation complete?
Definition
When the anterior/posterior neuropores fuse
Term
What does failed anterior neuropore fusion cause
Definition
Ancephally
Term
What happens in ancephaly
Definition
The forebrain does not form and usualy still birth or die after a few hours
Term
What does failed posterior neuropore fusion cause
Definition
Rachischisis
Term
What happens in rachischisis?
Definition
Spinal chord does not form properly causing paralysis
Term
What reduces the chance of neural tube defects by 50-70%
Definition
Folic acid
Term
What do neural crest cells develop from?
Definition
Cells separating from the neural tube when the neural folds elevate and fuse
Term
What happens to the embryo in week 4
Definition
The embryo folds in two directions
Term
What is formed during Cranocaudial flding
Definition
Connecting stalk (future umbilical cord)
Foetal bladder
Term
What is formed by lateral folding
Definition
Neural tube
Amnitotic cavity
Body cavity
Gut
Term
What is ectopia cordis
Definition
When lateral folds fail to fuse in the thoracic region leaving the heart outside of the body
Term
What is gastroschisis
Definition
Lateral folds fail to fuse in the abdominal region leaving the intestines outside the body
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