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BOARDS > embryological derivatives > Flashcards

embryological derivatives Flashcards

1
Q

adenohypophysis

A

surface ectoderm

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2
Q

parotid, sweat, and mammary glands

A

surface ectoderm

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3
Q

retina and optic nerve

A

neuroectoderm

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4
Q

melanocytes, chromaffin cells of adrenal medulla

A

neural crest

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5
Q

parafollicular cells of thyroid, pia and arachnoid

A

neural crest

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6
Q

aorticopulmonary septum

A

neural crest

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7
Q

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

A

neural crest; mesoderm

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8
Q

vagina

A

mesoderm

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9
Q

mneumonic for mesodermal defects

A 
VACTERL
Vertebral defects
Anal atresia
Cardiac defects
TE fistula
Renal defects
Limb defects
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10
Q

cardiac muscle

A

mesoderm

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11
Q

spleen

A

mesoderm

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12
Q

bladder

A

mesoderm

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13
Q

gonads

A

mesoderm

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14
Q

gut tube epithelium

A

endoderm

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15
Q

majority of urethra

A

endoderm

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16
Q

lungs, liver, GB, pancreas, thymus

A

endoderm

17
Q

baby presents with urine discharge from umbilicus

A

patent urachus

18
Q

baby presents with meconium discharge from umbilicus

A

vitelline fistula

19
Q

maxillary artery derived from what aortic arch derivative

A

1st

20
Q

stapedial artery derived from what aortic arch derivative

A

2nd

21
Q

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

A

3rd

22
Q

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

A

4th

23
Q

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

A

6th

24
Q

branchial cyst in lateral neck

A

persistent cervical sinus

25
Q

mandibular hypoplasia, facial abnormalities (which arch?)

A

failure of 1st arch neural crest to migrate

Treacher Collins syndrome

26
Q

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

A

persistence of 2nd arch cleft and pouch

Congenital pharyngocutnaous fistula

27
Q

umbilical arteries turn into what ligament?

A

medial umbilical ligament

28
Q

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

A

umbilical vein

29
Q

urachus median umbilical ligament derived from what structure?

A

allantois

30
Q

what does the notocord turn into?

A

nucleus pulposus of intervertebral disc

BOARDS (20 decks)

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