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21 Cards in this Set
- Front
- Back
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What's the maternal contribution to the placenta?
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Lacunar Network
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what layer of the placenta takes over the hormone secretion of the corpus luteum? who contributes this component?
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synctiotrophoblast; fetus
(think: sync= fetal component of placenta that SYNCs to corpus luteum's hCG production) |
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What is the post-natal derivative of the notochord
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nucleus pulposus of intervertebral disk
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what occurs at the begging of the developmental stage during which the primitive structure is formed, which will later become the nucleus pulposis of the intervertebral disks
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primitive streak and node
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how are the target organs of 1 MEN Syndrome related?
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all derivatives of neural crest cells
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what stages are meiosis arrested for oocytes?
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Meiosis I arrested in prOphase until Ovulation
Meiosis II arrested in METaphase until an egg MET a sperm |
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Failure of neural crest cell migration to distal colon-- disease and high risk group
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Hirschsprung's; Down syndrome
(constipation, failure to pass meconium, aganglionic distal colon) |
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posterior pituitary derived from what primitive brain structure?
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diencephalon (neuroectoderm)
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anterior pituitary derived from which germ layer?
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oral ectoderm
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astrocytes, ependymal cells, and oligodendroglia cells derive from
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the neural tube
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pseudounipolar cells, Schwann cells, multipolar ganglion cells of autonomic ganglia, chromafin cells of the adrenal medula, odontoblasts, melnocytes and the leptomeninges (pia and arachnoid) derive from
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neural crest
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failure of lateral body fold to fuse --> extrusion of ab contents
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gastroschisis
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persistance of herniation of ab contents into umbilical cord
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omphalocele
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embryonic kidney until week 4
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pronephros
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interim kidney for 1st trimester (then develops into ductus deferens)
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mesonephros
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embyonic structure that develops into permanent kidney
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metanephros
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develops into bladder, urethra, allantois
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urogenital sinus
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forgut, midgut, hindgut blood supply
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celiac a, SMA, IMA
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what artery branches off aorta at T12?
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celiac a
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what germ layer does spleen originate from
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mesoderm (an exception to the "endernal organ" mneumonic)
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Foreut, midgut, hindgut are from where to where?
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foregut- pharynx to duodenum
midgut-duodenum to transverse colon hindgut- distal transverse colon to rectum |
