Shit - Repro Flashcards
(108 cards)
FAS mutations
limb dislocation, heart defects (PDA, VSD, ASD), Tetrallogy, heart-lung fistulas, holoprosencephaly.
syncitiotrophoblast role
Secrete bHCG which looks like LH, so corpus luteum is stimulated to keep making progesterone and not regress (sustains pregnancy). Eventually the placenta will take over progesterone (and estrogen) production role.
Syncytiotroph cell marker
NO MHC-I - prevents attack by maternal system
umbilical artery vs vein: carry, #, derived from, problems
Umbilical arteries (2) = deO2 from baby's internal iliac Umbilical vein (1) = O2 blood from placenta to baby liver/ductus venosus.
Derived from allantoid (form yolk sac)
1 artery (2-vessel cord) = congenital/chromosomal abnormalities
Urachus
from yolk sac from allantois
connects urogenital sinus to yolk sac
Fail to fust: fistula (bellybutton pee), cyst, vesicourachal diverticulum
vitelline duct
= omphalomesenteric duct
connects midgut to yolk sac
Fail to fuse = fistula (bellybutton poo), cyst, or meckel’s diverticulum
MEckel’s sequale
infection. heterotopic gastritis (choristoma) heterotopic pancreatic (choristoma)
Digeorge =
missing 3rd and 4th pouches
3 = thymus + inferior parathyroids
4 = C-cells + superior parathyroids
Parathyroids always from the dorsal wings; other = ventral
Cleft lip = failure of:
1’ palate
maxillary and medial NASAL processes
Cleft palate = failure of:
2’ palate
2 lateral PALATNE processes; or lateral PALATINE process with nasal SEPTUM or medial PALATINE process
congenital torticolis: s/s
neck, dip dysplasia, matatarsal adductus, talipes equinovarus
SRY
makes TDF –> grow testes
MIF
from sertoli cells, inhibit mullein (paramesonephric) duct system
Testosterone (embyo)
From leydig, makes internal male genetalia (except prostate)
Missing MIF or sertoli
Male from leydig side, but no regression of internal female genetalia
Missing 5-a-reductase
can’t turn testosterone to DHT, so internal male, external ambicuous until puberty, puberty = massive testosterone spike which promotes 2’ male sex characteristics
Uterus malformations: order of severity
septate, bicorunate, didelphys (double everything)
Mullerian agenesis (Maybe-Rokitansky-Kuster-Hauser)
Mullerian duct does not develop.
Ovaries and short blind vagina present.
1’ amenorrhea, no uterus/tubes
genital tubercle
glans (both), shaft, vestibular bulbs
Malposition = epispadias
urogenital sinus
Senke and bartholin
bulbourethral (cowpers) and prostate
urogenital folds
labia minora and ventral penis
Fait to fuse urethral fods = hypospadias
associations with hypospadias
cryptorchidism and inguinal hernia
associations with epispadias
bladder exstrophy
use of misoprostol (PGE1 analog) with mifepristone
sensitizes myometrium to mifepristone; also causes abdominal cramping/pain