embryology Flashcards
three generations of kidney
pronephros, mesonephros, metanephros
what kidney generation forms uretic bud>
metanephros
pronephros degen vs diff direction
deign cranially, diff caudally
when does mesonephros function
4-6 wk, regresses by 12 week
urorectal septum separates cloaca into
urogenital sinus and anorectal canal
trigone tissue type
mesoderm>ectoderm
urogenital sinus: cranial, next, phallic
bladder, pelvic urethra, vag/penile urethra
when does metanephric ascend
6-9 weeks
what is original mesoderm urogenital system originates from
intermediate mesoderm
initial shared cavity is the
cloaca
what persists in male to form ductal system?
mesonephtric ducts
nephritic vesicle differentiates from
metanephric cap, triggered by tip of tubule
vestibule of vagina comes from
phallic segment of urogenital sinus
potters syndrome
bilateral renal agenesis»>ologohydraminos, compression of fetus, deformities.
urachal cyst
allendois fails to close, won’t notice unless infected
uracil sinus
part of Uranus is patent, opens to umbilicus, NOT URINE
urachal fistula
entirely patent, urine escapes
metanephric diverticulum comes from
mesonephric duct… forms metanephros
ureteric buds form
collecting ducts and ureters
what forms bowman capsule
metenephric blastemal
metanephros starts working when?
week 10
Incomplete division of the metanephric diverticulum
duplicated ureter
accessory renal arteries are
end arteries
what region of the embryo does the pronephtros start
cervical
