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43 Cards in this Set
- Front
- Back
postnatal derivative of notocord?
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nucleus pulposus of intervertebral discs
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gut organs that are endoderm
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pancreas, gut, liver
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gut organs that are mesoderm
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serous linings of cavities
spleen, lymphatics, kidneys, adrenal cortex |
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ACE inhibitor- effect on fetus?
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renal damage
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alkylating agents- effect on fetus?
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absence of digits- multiple anomalies
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smoking, (nicotine, CO) effect on fetus
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preterm labor, placental problems, ADHD
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Tetracycline effect on fetus?
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discolored teeth
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vitamin A excess- effect on fetus
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spontaneous abortions
birth defects (cleft palate, cardiac abnormalities) |
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what day is chorion formed?
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Day 3
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What day is amnion formed?
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Day 8
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during which period can you have a monochorionic diamniotic placenta?
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Day 3-8
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What day do monozygotic twins usually develop?
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Day 5 - blastocyst stage
- usually monochorionic diamniotic |
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What fetal component makes hCG?
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synctiotrophoblasts
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maternal part of placenta
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decidua basalis
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Urachus
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duct between bladder and yolk sac
- yolk sac --> allantois --> urachus |
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patent urachus
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urine discharge from umbilicus
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Vesicourachal diverticulum
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outpoutching of bladder- from failure of urachus to obliterate
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vitelline duct
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connects yolk sac to midgut lumen
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Vitelline fistula
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failure of duct to close --> meconium discharge from umbilicus
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Prosencephalon
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Telencephalon- cerebral hemisphere, lateral ventricles
Diencephalon- thalami, 3rd ventricle |
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Mesencephalon
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midbrain
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Rhombocephalon
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Metencephalon- pons, cerebellum, aqueduct
Myelencephalon- medulla, 4th ventricle |
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high AFP at 4th week
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neural tube defect- fusion failure
- spina bifida - anencephaly- no brain |
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Syringomyelia
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enlarged central canal of spinal cord
- crossing fibers damaged first --> cape like bilateral loss of pain and temperature - associated with arnold chiari II |
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branchial clefts derived from
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ectoderm
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Branchial arches derived from
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mesoderm
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Branchial pouches derived from
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endoderm
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Innervation of stylopharyngeus
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CN IX- arch 3
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action of arch 4
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swallowing - CN X
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action of arch 6
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speaking - CNX
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action of arch 1
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chewing- CN V
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action of arch 2
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facial expression - CN VII
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bicornuate uterus
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incomplete fusion of paramesonephric ducts
- UTI, infertility |
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exstrophy
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bladder outside of body
- associated with epispadias- dorsal opening of penis |
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caudal regression syndrome
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- maternal diabetes
- agenesis of sacrum --> flaccid paralysis of lower extremities etc |
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Teratogen that looks like Di George?
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Vitamin A
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Common carotid is from which aortic arch?
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3rd
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Ductus arteriosus is from which aortic arch
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6th
(pulmonary arteries too) |
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Most common cause of bilateral hydronephrosis in fetus?
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ureteropelvic junction - last to canalize
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surfactant stimulated by what?
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cortisol from mother and fetus in 3rd trimester
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melanocytes- which layer?
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neural crest
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hydrocele pathogenesis
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persistent tunica vaginalis - abdominal fluid leaks into tesis
- like indirect inguinal hernia |
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increased amniotic fluid -->
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anencephaly
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