Embryology Flashcards
kidneys originate from ___ __derm
intermediate mesoderm
pronephros form from segmentation of ____ at __ end
later regresses
intermediate mesoderm
cranial
___ duct grows alongside pronephros
mesonephric
__ mesonephric tubules are produced from intermediate mesoderm
regress end wk 5 and leave __ pairs, spinal level __
40
20
L1-L3
mesonephric tubules function as __ wk __-__ the regress as kidney proper takes over
excretory units
6-10
metanephros appears wk __ and functions wk ___ becomes permanent ___ from __+__
5
9-11
kidney
ureteric bud and metanephric blastema
ureteric buds sprout from ___ on day __
penetrate ___ on day __
distal mesonephric duct - 28
sacral intermediate mesoderm (metanephric blastema) - 32
ureteric bud bifurcates __x > intususception > branch > intususception and form +++
later branching => __
= __ system
4x minor and major calyces renal pelvis ureter later =collecting ducts Collecting system
metanephric blastema goes on to form ___
nephrons of kidney
kidneys begin in the __ and ascend
hilum points __ initially and points medially by __
reach final position wk _
adrenal glands begin __
pelvis anteriorly 7 9 where they stay
in a horseshoe kidney it remains trapped beneath __
IMA
cloaca => rectum + ___ (=> ++_(=>__+__)
primitive urogenital sinus
bladder
pelvic urethra
definitive urogenital sinus => penile urethra and vaginal parts
cloaca connects with umbilical cord via __ in embryo
allantois
mesonephric duct is incorporated into __ and moves down and ultimately joins with ___
regresses in F and in M => __
posterior bladder
urethra
vas deferens
trigone is formed from __ embryologically
mesonephric ducts
