Embryology Test 4 Flashcards
The brachiocephalic artery comes from which arch or structure?
aortic sac
The superior parathyroid glands come from which area?
superior pharyngeal pouch #4
The premaxilla and philtrum come from which area?
medial nasal processes
The incisive foramen marks the juction between which 2 areas?
primary and secondary palates
What is the origin of the palantine shelves and secondary palate?
maxillary prominences
What is the origin of the cells that make dentin?
neural crest cells
What is the rudiment for the nose?
medial and lateral nasal prominences
Which two germ layers make up trachea and lungs?
endoderm and splanchnic mesoderm
What is the stage where surfactant production actually begins?
terminal sac stage
What is the origin of Type II lung cells?
endoderm
Relative to the gut tube, where would a patent Meckel’s diverticulum occur?
ileum
Formation of the midgut primary intestinal loop depends on which major vitelline artery derivative?
superior mesenteric
What structure derives from both cranial and caudal intestinal loop limbs?
ileum
Failed retraction of the gut tube from umbilical is called what?
omphalocele
The definitive anal canal is comprised of what 2 tissues?
Endoderm and ectorderm
What structure comes from the metanephric blastema?
Bowman’s capsule
Even though the urinary bladder mainly comes from cloacal endoderm, the medodermal portion or trigone comes from what structure?
mesonephric ducts
Which structure comes from the uteric bud?
collecting tubules
Which defect is most closely assocciated with oligohydraminos?
bilateral kidney agenesis (potter’s syndrome)
What is the origin of the mesonephric ducts?
intermediate mesoderm
What is the origin of the metanephric blastema?
intermediate mesoderm
What is the origin of the seminiferous tubules?
medullary sex chords
What is the origin of the prostate gland?
urogenital sinus
What is the origin of the distal vagina?
urogenital sinus
What are cysts of Gartner?
patent mesonephric ducts in female
