Embryology Flashcards
what layer does the kidney form from
(intermediate) mesoderm
what forms the mesonephic duct
pronephrone (segementes unfunctional medoderm) then mesoderm (unsegemented functional mesoderm)
what later becomes the permamnent kidney
metanephrons (formed of uteric bud and metanephric bastema (a.ka. metanephros)
what forms the ureteric bud
mesonephric duct
what happens if ureteric bud doesnt cmomunicate with the metanephric mesenchyme
kidney agenesis
what forms the collecting system of the kidney (ureter, renal pelvis, major and minor calyces, collecting ducts)
ureteric bud
what forms the nephrons
metanephric blastema
what is the nephron
functional unit for the filtration of blood and production of urine
what are the four parts of the nephron
bowmans capsule (surrounds capillary)
proximal convoluted tubule
loop of henle
distal convoluted tubule
why are accessory renal arteries common
as ascend from pelvis and supplied by different branches along the way
what causes a pelvic kidney
failure to ascend
what causes a horseshoe kidney
inferior poles of metanephroi meet as fuse before ascent (the get trapped beneath IMA)
what later forms the bladder
hindgut endoderm (forms from cloaca- primitive urogenital sinus)
what layer is the prostate from
endoderm
