embryological derivatives Flashcards by Julia Peterson

adenohypophysis

surface ectoderm

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parotid, sweat, and mammary glands

surface ectoderm

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retina and optic nerve

neuroectoderm

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melanocytes, chromaffin cells of adrenal medulla

neural crest

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parafollicular cells of thyroid, pia and arachnoid

neural crest

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aorticopulmonary septum

neural crest

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bones of skull & odonotoblasts from______, the rest of the bones from_____

neural crest; mesoderm

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vagina

mesoderm

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mneumonic for mesodermal defects

VACTERL
Vertebral defects
Anal atresia
Cardiac defects
TE fistula
Renal defects
Limb defects

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cardiac muscle

mesoderm

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spleen

mesoderm

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bladder

mesoderm

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gonads

mesoderm

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gut tube epithelium

endoderm

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majority of urethra

endoderm

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lungs, liver, GB, pancreas, thymus

endoderm

baby presents with urine discharge from umbilicus

patent urachus

baby presents with meconium discharge from umbilicus

vitelline fistula

maxillary artery derived from what aortic arch derivative

1st

stapedial artery derived from what aortic arch derivative

2nd

internal carotid artery and common carotid derived from what aortic arch derivative

3rd

aortic arch and proximal part of right subclavian artery derived from what aortic arch derivative

4th

proximal part of pulmonary arteries and ductus arteriosus derived from what aortic arch derivative

6th

branchial cyst in lateral neck

persistent cervical sinus

mandibular hypoplasia, facial abnormalities (which arch?)

failure of 1st arch neural crest to migrate | Treacher Collins syndrome

fistula b/w tonsillar area and lateral neck (which arch)

persistence of 2nd arch cleft and pouch | Congenital pharyngocutnaous fistula

umbilical arteries turn into what ligament?

medial umbilical ligament

ligamentum teres hepatis (falciform ligament ) from what embryo derivative?

umbilical vein

urachus median umbilical ligament derived from what structure?

allantois

what does the notocord turn into?

nucleus pulposus of intervertebral disc